Communication in Pre-Technical Studies

Plain Scale Drawing - Features of a plain scale

By the end of the lesson, the learner should be able to:
- Define a plain scale and explain its purpose in drawing
- Identify the features of a plain scale from a given diagram
- Show interest in learning how scales are used in technical drawing

In groups, learners are guided to:
- Use a dictionary or Internet to find the meaning of a plain scale
- Discuss what can be observed on a plain scale from the diagram provided
- Identify two sets of divisions, labels, the representative fraction (R.F.) and the zero point

What is a plain scale and why is it used in technical drawing?

- Longhorn Pre-Technical Studies Grade 8 pg. 42
- Plain scale diagrams and charts
- Internet access and reference books

- Oral questions - Observation

Communication in Pre-Technical Studies

Plain Scale Drawing - Features of a plain scale

By the end of the lesson, the learner should be able to:
- Describe the four features of a plain scale
- Explain the role of the representative fraction (R.F.) on a plain scale
- Appreciate that the zero point is the reference for all measurements on a plain scale

In groups, learners are guided to:
- Discuss the four features: two sets of divisions, labelled numbers, R.F. and zero point
- Explain the difference between main divisions (e.g. metres) and subdivisions (e.g. decimetres)
- Discuss how the direction from the zero point determines the unit being measured

How does the representative fraction help us understand the relationship between a drawing and the real object?

- Longhorn Pre-Technical Studies Grade 8 pg. 43
- Plain scale diagrams
- Drawing instruments

- Oral questions - Written assignments

Communication in Pre-Technical Studies

Plain Scale Drawing - Interpreting a plain scale

By the end of the lesson, the learner should be able to:
- Construct a plain scale given the representative fraction
- Interpret the divisions on a plain scale to read measurements
- Show precision when constructing and labelling a plain scale

In groups, learners are guided to:
- Construct a plain scale with R.F. to measure length in metres and decimetres
- Label the main divisions and subdivisions correctly
- Measure the divisions using a ruler and confirm the R.F. from the scale constructed

How do you use the representative fraction to construct a plain scale correctly?

- Longhorn Pre-Technical Studies Grade 8 pg. 44
- Drawing instruments and paper
- Ruler and pencil

- Practical assessment - Observation

Communication in Pre-Technical Studies

Plain Scale Drawing - Interpreting a plain scale

By the end of the lesson, the learner should be able to:
- Construct a plain scale given the representative fraction
- Interpret the divisions on a plain scale to read measurements
- Show precision when constructing and labelling a plain scale

In groups, learners are guided to:
- Construct a plain scale with R.F. to measure length in metres and decimetres
- Label the main divisions and subdivisions correctly
- Measure the divisions using a ruler and confirm the R.F. from the scale constructed

How do you use the representative fraction to construct a plain scale correctly?

- Longhorn Pre-Technical Studies Grade 8 pg. 44
- Drawing instruments and paper
- Ruler and pencil

- Practical assessment - Observation

Communication in Pre-Technical Studies

Plain Scale Drawing - Interpreting a plain scale

By the end of the lesson, the learner should be able to:
- Construct plain scales for different units of measurement
- Compare plain scales of different R.F. values
- Appreciate the need for accuracy when constructing plain scales

In groups, learners are guided to:
- Construct a plain scale (a) in cm and mm up to 10 cm
- Construct a plain scale (b) in metres and decimetres up to 12 m
- Construct a plain scale (c) in kilometres and hectometres; compare and discuss the three scales

Why do plain scales for different units of measurement look different even when the R.F. is the same?

- Longhorn Pre-Technical Studies Grade 8 pg. 45
- Drawing instruments and A3 paper
- Ruler and pencil

- Practical assessment - Observation

Communication in Pre-Technical Studies

Plain Scale Drawing - Interpreting a plain scale

By the end of the lesson, the learner should be able to:
- Read a plain scale to find lengths of given measurements
- Apply the formula: Length = Part A + Part B to find total length
- Show accuracy when reading values from a plain scale

In groups, learners are guided to:
- Construct the plain scale shown in Activity 4 and measure its divisions
- Read the plain scale to find the value of length x (Part A + Part B)
- Read the plain scale to find length k using the worked example (k = 4 m + 0.9 m = 4.9 m)

How do you accurately read a plain scale to find the length of a given measurement?

- Longhorn Pre-Technical Studies Grade 8 pg. 46
- Constructed plain scales
- Ruler and drawing instruments

- Oral questions - Written assignments

Communication in Pre-Technical Studies

Plain Scale Drawing - Drawing plane figures to a given scale

By the end of the lesson, the learner should be able to:
- Determine the representative fraction of a given scale drawing
- Draw plane figures to a given scale using drawing instruments
- Appreciate the importance of accurate scale conversion when drawing

In groups, learners are guided to:
- Measure given drawings and calculate the representative fraction
- Convert actual dimensions to drawing dimensions using the scale
- Draw a classroom floor measuring 12 m × 8 m to a given scale following the worked example

How do you convert actual measurements to drawing measurements when making a scale drawing?

- Longhorn Pre-Technical Studies Grade 8 pg. 47
- Drawing instruments and paper
- Ruler, pencil and calculator

- Practical assessment - Written assignments

Communication in Pre-Technical Studies

Plain Scale Drawing - Use of plain scale drawing

By the end of the lesson, the learner should be able to:
- Identify workplaces where plain scale drawing is used
- Relate plain scale drawing to architecture, urban planning, surveying and interior design
- Show appreciation for the role of plain scale drawing in professional work

In groups, learners are guided to:
- Study a house plan and determine drawing measurements of walls using a ruler
- Compare the R.F. found with the one provided on the plan
- Discuss five work environments where plain scale drawing is used (architecture, urban planning, surveying, interior design, education)

How does plain scale drawing make it possible to represent large real-world objects on paper?

- Longhorn Pre-Technical Studies Grade 8 pg. 49
- House plan samples and printed scale drawings
- Internet access and reference books

- Oral questions - Written test

Communication in Pre-Technical Studies

Visual Programming - Types of visual programming applications

By the end of the lesson, the learner should be able to:
- Define visual programming and visual programming applications
- Identify the three types of visual programming applications
- Show interest in exploring visual programming tools

In groups, learners are guided to:
- Brainstorm on the meanings of visual programming and visual programming applications
- Use the Internet to search for types of visual programming applications
- Discuss and categorise educational, multimedia and video game development applications

How is visual programming different from regular text-based programming?

- Longhorn Pre-Technical Studies Grade 8 pg. 52
- Digital devices and internet access
- Charts on types of visual programming

- Oral questions - Observation

Communication in Pre-Technical Studies

Visual Programming - Types of visual programming applications

By the end of the lesson, the learner should be able to:
- Define visual programming and visual programming applications
- Identify the three types of visual programming applications
- Show interest in exploring visual programming tools

In groups, learners are guided to:
- Brainstorm on the meanings of visual programming and visual programming applications
- Use the Internet to search for types of visual programming applications
- Discuss and categorise educational, multimedia and video game development applications

How is visual programming different from regular text-based programming?

- Longhorn Pre-Technical Studies Grade 8 pg. 52
- Digital devices and internet access
- Charts on types of visual programming

- Oral questions - Observation

Communication in Pre-Technical Studies

Visual Programming - Types of visual programming applications

By the end of the lesson, the learner should be able to:
- Identify Scratch and Microsoft MakeCode as examples of visual programming applications
- Describe the purpose of each application
- Appreciate how visual programming applications make coding accessible to learners

In groups, learners are guided to:
- Study icons of Scratch, MakeCode and Spritebox and identify each application
- Discuss how Scratch uses colourful blocks to teach programming concepts
- Discuss how MakeCode enables beginners to create programs for devices

What makes Scratch a suitable visual programming application for learning coding?

- Longhorn Pre-Technical Studies Grade 8 pg. 53
- Digital devices with Scratch and MakeCode installed
- Internet access

- Oral questions - Observation

Communication in Pre-Technical Studies

Visual Programming - Features of visual programming applications

By the end of the lesson, the learner should be able to:
- Identify the features of the Scratch visual programming application
- Describe the function of each feature on the Scratch interface
- Show willingness to explore and navigate a visual programming environment

In groups, learners are guided to:
- Type 'Scratch' in a browser and launch the application
- Click 'Create' and identify different features on the Scratch homepage
- Write a brief summary of the features observed and share with classmates

What are the main features of the Scratch application and what is the role of each feature?

- Longhorn Pre-Technical Studies Grade 8 pg. 54
- Computers or tablets with internet access
- Scratch application (scratch.mit.edu)

- Observation - Oral questions

Communication in Pre-Technical Studies

Visual Programming - Features of visual programming applications

By the end of the lesson, the learner should be able to:
- Explain the functions of the features of the Scratch application
- Match each Scratch feature to its correct function
- Show confidence in navigating the Scratch interface

In groups, learners are guided to:
- Use the Internet to find out the functions of Scratch features
- Complete the matching activity linking each feature to its function
- Practise using different Scratch features and discuss findings with peers

How does the script area in Scratch help a programmer create instructions for a sprite?

- Longhorn Pre-Technical Studies Grade 8 pg. 55
- Computers or tablets with Scratch
- Internet access

- Observation - Practical assessment

Communication in Pre-Technical Studies

Visual Programming - Features of visual programming applications

By the end of the lesson, the learner should be able to:
- Add sprites and create commands in the Scratch script area
- Apply backdrops, sounds and effects to make a Scratch project interactive
- Show creativity when designing a visual programming project

In groups, learners are guided to:
- Add different sprites and create a set of commands in the script area
- Add backdrops, sounds and effects to the project
- Test how control and events blocks bring the project to life; share and explain the project to other groups

How do control blocks and event blocks work together to make a Scratch project interactive?

- Longhorn Pre-Technical Studies Grade 8 pg. 58
- Computers or tablets with Scratch
- Internet access

- Practical assessment - Observation

Communication in Pre-Technical Studies

Visual Programming - Features of visual programming applications

By the end of the lesson, the learner should be able to:
- Add sprites and create commands in the Scratch script area
- Apply backdrops, sounds and effects to make a Scratch project interactive
- Show creativity when designing a visual programming project

In groups, learners are guided to:
- Add different sprites and create a set of commands in the script area
- Add backdrops, sounds and effects to the project
- Test how control and events blocks bring the project to life; share and explain the project to other groups

How do control blocks and event blocks work together to make a Scratch project interactive?

- Longhorn Pre-Technical Studies Grade 8 pg. 58
- Computers or tablets with Scratch
- Internet access

- Practical assessment - Observation

Communication in Pre-Technical Studies

Visual Programming - Terminologies used in visual programming

By the end of the lesson, the learner should be able to:
- Define syntax, variables, input statements and output statements in visual programming
- Identify examples of input and output blocks in the Scratch application
- Appreciate the importance of understanding programming terminology

In groups, learners are guided to:
- Use the Internet to find meanings of syntax, variables, input and output statements
- Read and write meanings in notebooks and share with classmates
- Identify input blocks (sensing, ask) and output blocks (say, sound) in Scratch using Figures 8 and 9

What is the role of input and output statements in a visual programming application?

- Longhorn Pre-Technical Studies Grade 8 pg. 59
- Computers or tablets with Scratch
- Internet access and reference books

- Oral questions - Written assignments

Communication in Pre-Technical Studies

Visual Programming - Terminologies used in visual programming

By the end of the lesson, the learner should be able to:
- Define coding, coding blocks and sequence statements in visual programming
- Explain how coding blocks represent commands and control structures graphically
- Show understanding of how a sequence statement defines the order of instructions

In groups, learners are guided to:
- Complete the crossword puzzle activity on visual programming terminologies
- Define coding as the process of creating instructions for a computer to follow
- Discuss how coding blocks are graphical representations of commands in visual programming

How does a sequence statement ensure that a visual program runs its instructions in the correct order?

- Longhorn Pre-Technical Studies Grade 8 pg. 62
- Computers or tablets with Scratch
- Digital resources

- Oral questions - Observation

Communication in Pre-Technical Studies

Visual Programming - Terminologies used in visual programming

By the end of the lesson, the learner should be able to:
- Define selection statements, repeating statements and variable declarations
- Explain how each is used to control program flow in visual programming
- Appreciate how these terminologies form the building blocks of programming logic

In groups, learners are guided to:
- Define selection statement and explain how it enables a program to make decisions (IF blocks)
- Define repeating statement and explain how it repeats a set of instructions multiple times
- Define variable declarations and explain how they specify the type of data a variable can hold

How does a selection statement allow a visual program to respond differently to different conditions?

- Longhorn Pre-Technical Studies Grade 8 pg. 62
- Computers or tablets with Scratch
- Internet access

- Oral questions - Written assignments

Communication in Pre-Technical Studies

Visual Programming - Creating instructions using visual programming

By the end of the lesson, the learner should be able to:
- Create a new Scratch file and select a sprite
- Build a sequence of instructions using Scratch coding blocks
- Show interest in using visual programming to solve problems

In groups, learners are guided to:
- Create a new file in Scratch, select a sprite and drag coding blocks to the script area
- Build the sequence of instructions provided in Activity 7 and click to run
- Remove the forever block and observe the difference in how the instructions run

What happens to a Scratch program when the forever block is removed from a sequence of instructions?

- Longhorn Pre-Technical Studies Grade 8 pg. 63
- Computers or tablets with Scratch
- Internet access

- Practical assessment - Observation

Communication in Pre-Technical Studies

Visual Programming - Creating instructions using visual programming

By the end of the lesson, the learner should be able to:
- Create a new Scratch file and select a sprite
- Build a sequence of instructions using Scratch coding blocks
- Show interest in using visual programming to solve problems

In groups, learners are guided to:
- Create a new file in Scratch, select a sprite and drag coding blocks to the script area
- Build the sequence of instructions provided in Activity 7 and click to run
- Remove the forever block and observe the difference in how the instructions run

What happens to a Scratch program when the forever block is removed from a sequence of instructions?

- Longhorn Pre-Technical Studies Grade 8 pg. 63
- Computers or tablets with Scratch
- Internet access

- Practical assessment - Observation

Communication in Pre-Technical Studies

Visual Programming - Creating instructions using visual programming

By the end of the lesson, the learner should be able to:
- Use event blocks to trigger actions in a Scratch program
- Apply an IF selection block to change sprite behaviour based on a condition
- Show creativity when using event and control blocks in Scratch

In groups, learners are guided to:
- Drag an Events block and a Looks block into the script area
- Press the space bar and observe the effect on the sprite's colour
- Change the key in the block drop-down and observe the new behaviour; select a backdrop from the Stage panel

How does changing the key in an event block affect what happens when the program runs?

- Longhorn Pre-Technical Studies Grade 8 pg. 64
- Computers or tablets with Scratch
- Internet access

- Practical assessment - Observation

Communication in Pre-Technical Studies

Visual Programming - Creating instructions using visual programming

By the end of the lesson, the learner should be able to:
- Use event blocks to trigger actions in a Scratch program
- Apply an IF selection block to change sprite behaviour based on a condition
- Show creativity when using event and control blocks in Scratch

In groups, learners are guided to:
- Drag an Events block and a Looks block into the script area
- Press the space bar and observe the effect on the sprite's colour
- Change the key in the block drop-down and observe the new behaviour; select a backdrop from the Stage panel

How does changing the key in an event block affect what happens when the program runs?

- Longhorn Pre-Technical Studies Grade 8 pg. 64
- Computers or tablets with Scratch
- Internet access

- Practical assessment - Observation

Communication in Pre-Technical Studies

Visual Programming - Creating instructions using visual programming

By the end of the lesson, the learner should be able to:
- Create a Scratch project of own choice using a sequence of coding blocks
- Write down the steps followed to create the instructions
- Show confidence and creativity in building an independent visual programming project

In groups, learners are guided to:
- Create instructions of own choice using Scratch and write down the steps followed
- Create a project where the sprite says 'Hello' when the green flag is clicked
- Share the complete sequence of instructions with classmates and explain coding choices

How do you plan and organise coding blocks before building a Scratch project?

- Longhorn Pre-Technical Studies Grade 8 pg. 65
- Computers or tablets with Scratch
- Internet access

- Practical assessment - Portfolio

Communication in Pre-Technical Studies

Visual Programming - Creating instructions using visual programming

By the end of the lesson, the learner should be able to:
- Create a Scratch project of own choice using a sequence of coding blocks
- Write down the steps followed to create the instructions
- Show confidence and creativity in building an independent visual programming project

In groups, learners are guided to:
- Create instructions of own choice using Scratch and write down the steps followed
- Create a project where the sprite says 'Hello' when the green flag is clicked
- Share the complete sequence of instructions with classmates and explain coding choices

How do you plan and organise coding blocks before building a Scratch project?

- Longhorn Pre-Technical Studies Grade 8 pg. 65
- Computers or tablets with Scratch
- Internet access

- Practical assessment - Portfolio

Communication in Pre-Technical Studies

Visual Programming - Types of visual programming applications

By the end of the lesson, the learner should be able to:
- Explain the importance of visual programming in day-to-day life
- Describe the types and features of visual programming applications
- Show appreciation for visual programming as a tool for creativity and problem solving

In groups, learners are guided to:
- Read the newspaper article on visual programming and identify three importances stated
- Discuss other importances of visual programming (accessibility, creativity, digital literacy)
- Answer review exercises: define terms, describe types and create an electronic keyboard project

How has visual programming made coding more accessible to people who are not trained programmers?

- Longhorn Pre-Technical Studies Grade 8 pg. 66
- Digital devices and internet access
- Reference books

- Oral questions - Written test - Peer and self-assessment

Communication in Pre-Technical Studies

Visual Programming - Types of visual programming applications

By the end of the lesson, the learner should be able to:
- Explain the importance of visual programming in day-to-day life
- Describe the types and features of visual programming applications
- Show appreciation for visual programming as a tool for creativity and problem solving

In groups, learners are guided to:
- Read the newspaper article on visual programming and identify three importances stated
- Discuss other importances of visual programming (accessibility, creativity, digital literacy)
- Answer review exercises: define terms, describe types and create an electronic keyboard project

How has visual programming made coding more accessible to people who are not trained programmers?

- Longhorn Pre-Technical Studies Grade 8 pg. 66
- Digital devices and internet access
- Reference books

- Oral questions - Written test - Peer and self-assessment

Communication in Pre-Technical Studies

Visual Programming - Types of visual programming applications

By the end of the lesson, the learner should be able to:
- Explain the importance of visual programming in day-to-day life
- Describe the types and features of visual programming applications
- Show appreciation for visual programming as a tool for creativity and problem solving

In groups, learners are guided to:
- Read the newspaper article on visual programming and identify three importances stated
- Discuss other importances of visual programming (accessibility, creativity, digital literacy)
- Answer review exercises: define terms, describe types and create an electronic keyboard project

How has visual programming made coding more accessible to people who are not trained programmers?

- Longhorn Pre-Technical Studies Grade 8 pg. 66
- Digital devices and internet access
- Reference books

- Oral questions - Written test - Peer and self-assessment

Materials for Production

Composite Materials - Composite materials in the locality

By the end of the lesson, the learner should be able to:
- Define the term composite material
- Identify composite materials found in the locality
- Show interest in exploring composite materials in the immediate environment

- Study cards on composite materials created by Grade 8 learners (Figure 1) and identify materials on each card
- Discuss the meaning of composite materials in groups
- Give three examples of composite materials found in the community

What is a composite material and where can composite materials be found in the locality?

- Longhorn Pre-Technical Studies Grade 8 pg. 67
- Realia (samples of composite materials from the locality)
- Digital devices and internet access

- Oral questions - Observation

Materials for Production

Composite Materials - Composite materials in the locality

By the end of the lesson, the learner should be able to:
- Identify common composite materials using visual aids and realia
- Describe how to identify an item made from each composite material
- Appreciate the variety of composite materials available in the locality

- Study Figure 2 showing common composite materials (concrete, bricks, manufactured boards, stones, papier mâché, plastic-coated paper)
- Identify each material and discuss which are available in the local area
- Discuss other composite materials known to the learners and share with the class

How can you identify an item made from a composite material in your locality?

- Longhorn Pre-Technical Studies Grade 8 pg. 68
- Visual aids and realia of composite materials
- Digital devices and internet access

- Oral questions - Observation

Materials for Production

Composite Materials - Composition of composite materials

By the end of the lesson, the learner should be able to:
- Describe the composition of common composite materials
- Identify the constituent materials of concrete, bricks, manufactured boards, stones, papier mâché and plastic-coated paper
- Show curiosity in finding out what materials are combined to make composites

In groups, learners are guided to:
- Use the Internet or other available resources to find out the composition of each composite material (concrete, bricks, manufactured boards, stones, papier mâché, plastic-coated paper)
- Discuss the components of each composite material with peers
- Write and present summary notes on the composition of composite materials

What constituent materials are combined to make concrete and bricks?

- Longhorn Pre-Technical Studies Grade 8 pg. 69
- Internet access and reference books
- Digital devices

- Oral questions - Written assignments

Materials for Production

Composite Materials - Composition of composite materials

By the end of the lesson, the learner should be able to:
- Describe the composition of common composite materials
- Identify the constituent materials of concrete, bricks, manufactured boards, stones, papier mâché and plastic-coated paper
- Show curiosity in finding out what materials are combined to make composites

In groups, learners are guided to:
- Use the Internet or other available resources to find out the composition of each composite material (concrete, bricks, manufactured boards, stones, papier mâché, plastic-coated paper)
- Discuss the components of each composite material with peers
- Write and present summary notes on the composition of composite materials

What constituent materials are combined to make concrete and bricks?

- Longhorn Pre-Technical Studies Grade 8 pg. 69
- Internet access and reference books
- Digital devices

- Oral questions - Written assignments

Materials for Production

Composite Materials - Relating composite materials to their use

By the end of the lesson, the learner should be able to:
- Name items made from composite materials from pictures
- Match composite materials to the items they are used to make
- Appreciate how composite materials are used to make everyday items

In groups, learners are guided to:
- Study Figure 3 showing items made from composite materials and name each item
- Identify the composite material used to make each item in the pictures
- Match composite materials to the correct items they produce

How are composite materials used to make items found in day-to-day life?

- Longhorn Pre-Technical Studies Grade 8 pg. 70
- Visual aids and realia of items made from composites
- Charts and pictures

- Oral questions - Observation

Materials for Production

Composite Materials - Relating composite materials to their use

By the end of the lesson, the learner should be able to:
- Identify uses of composite materials in different workplaces
- Relate composite materials to their specific uses in construction, carpentry and packaging
- Show responsibility when visiting and observing workplaces in the locality

In groups, learners are guided to:
- Observe workplaces shown in Figure 4 and name items made of composite materials in each
- Discuss the uses of composite materials in the workplaces shown
- Visit other workplaces in the locality and identify how composite materials are used in each

In what ways are composite materials used differently across various workplaces?

- Longhorn Pre-Technical Studies Grade 8 pg. 71
- Charts and pictures of workplaces
- Realia of composite materials

- Observation - Oral questions

Materials for Production

Composite Materials - Importance of composite materials

By the end of the lesson, the learner should be able to:
- Explain the importance of composite materials in day-to-day life
- Relate each composite material to its specific importance (strength, performance, flexibility, lightweight, beauty, packaging, conservation)
- Acknowledge the value of composite materials in the work environment

In groups, learners are guided to:
- Match each composite material to its correct uses in the matching activity
- Use the Internet to search for the importance of composite materials and share with classmates
- Discuss the seven importances: enhanced strength and durability, improved performance, flexibility and cost effectiveness, lightweight and corrosion resistance, beauty, moisture-resistant packaging, and environmental conservation

Why are composite materials preferred over single materials in construction and manufacturing?

- Longhorn Pre-Technical Studies Grade 8 pg. 72
- Internet access and reference books
- Digital devices

- Oral questions - Written assignments

Materials for Production

Composite Materials - Composite materials in the locality

By the end of the lesson, the learner should be able to:
- Identify composite materials from pictures and describe their composition
- State the uses of identified composite materials in given work contexts
- Show confidence in applying knowledge of composite materials to practical scenarios

In groups, learners are guided to:
- Use a digital device to search for and download pictures of different composite materials
- Answer exercise questions: identify composites in a carpenter's workplace, describe composition, state uses of composite materials used by a carpenter, mason and chef
- Write a summary of findings on composition, uses and importance of composite materials

How are composite materials used differently by a carpenter, a mason and a chef?

- Longhorn Pre-Technical Studies Grade 8 pg. 74
- Digital devices and internet access
- Exercise books for written responses

- Written test - Oral questions

Materials for Production

Ceramic Materials - Common ceramic materials in the locality

By the end of the lesson, the learner should be able to:
- Define the term ceramic material
- Identify common ceramic materials found in the locality
- Show interest in learning about ceramic materials in the environment

In groups, learners are guided to:
- Study Figure 1 showing ceramic materials observed during a workshop visit
- Discuss the meaning of ceramic materials in groups
- Give three examples of items made from ceramic materials in the community

What is a ceramic material and where are ceramic materials found in the locality?

- Longhorn Pre-Technical Studies Grade 8 pg. 75
- Realia (pottery, ceramic utensils, glass, shale)
- Digital devices and internet access

- Oral questions - Observation

Materials for Production

Ceramic Materials - Common ceramic materials in the locality

By the end of the lesson, the learner should be able to:
- Describe the types of ceramic materials — pottery, ceramic utensils, glass and shale
- Distinguish between earthenware, stoneware and porcelain as types of pottery
- Appreciate the variety of ceramic materials available in the locality

In groups, learners are guided to:
- Define ceramic material as a non-metallic substance formed by heating natural minerals
- Discuss the four types: pottery (earthenware, stoneware, porcelain), ceramic utensils, glass and shale
- Describe the characteristics and common uses of each type using the learning points

How do earthenware, stoneware and porcelain differ in terms of the temperatures at which they are fired?

- Longhorn Pre-Technical Studies Grade 8 pg. 76
- Realia (earthenware pot, stoneware cup, porcelain plate, glass)
- Charts and reference books

- Oral questions - Observation

Materials for Production

Ceramic Materials - Common ceramic materials in the locality

By the end of the lesson, the learner should be able to:
- Describe the types of ceramic materials — pottery, ceramic utensils, glass and shale
- Distinguish between earthenware, stoneware and porcelain as types of pottery
- Appreciate the variety of ceramic materials available in the locality

In groups, learners are guided to:
- Define ceramic material as a non-metallic substance formed by heating natural minerals
- Discuss the four types: pottery (earthenware, stoneware, porcelain), ceramic utensils, glass and shale
- Describe the characteristics and common uses of each type using the learning points

How do earthenware, stoneware and porcelain differ in terms of the temperatures at which they are fired?

- Longhorn Pre-Technical Studies Grade 8 pg. 76
- Realia (earthenware pot, stoneware cup, porcelain plate, glass)
- Charts and reference books

- Oral questions - Observation

Materials for Production

Ceramic Materials - Physical properties of ceramic materials

By the end of the lesson, the learner should be able to:
- Investigate the physical properties of ceramic materials through practical experiments
- Observe and record the behaviour of ceramic materials when subjected to impact, heat and water
- Show responsibility and caution when handling ceramic materials during experiments

In groups, learners are guided to:
- Hit a ceramic pot with a hammer and observe what happens (brittleness)
- Expose ceramic items to a flame for 2 minutes and note changes (fire resistance)
- Pour hot water into a ceramic cup and check for melting or bending (heat resistance); fill a glass with water and check for leaks (water resistance); add lemon juice to a ceramic glass and observe changes (corrosion resistance)

What happens to a ceramic material when it is dropped or subjected to high temperatures?

- Longhorn Pre-Technical Studies Grade 8 pg. 77
- Ceramic items (pots, utensils, glasses)
- Hammer, flame source, hot water, lemon juice

- Observation - Practical assessment

Materials for Production

Ceramic Materials - Physical properties of ceramic materials

By the end of the lesson, the learner should be able to:
- Define and explain the five physical properties of ceramic materials
- Give examples of how each property makes ceramic materials suitable for specific uses
- Appreciate how the properties of ceramic materials determine their applications

In groups, learners are guided to:
- Define and discuss brittleness — ceramic materials break easily when hit or dropped
- Define and discuss fire resistance, heat resistance and water resistance with examples
- Define corrosion resistance and explain how it makes ceramics suitable for laboratory use and acidic environments

Why are ceramic materials preferred for use in laboratories and cooking despite being brittle?

- Longhorn Pre-Technical Studies Grade 8 pg. 78
- Charts showing physical properties of ceramics
- Realia and reference books

- Oral questions - Written assignments

Materials for Production

Ceramic Materials - Relating ceramic materials to their use

By the end of the lesson, the learner should be able to:
- Name ceramic materials from pictures and identify their uses
- Relate pottery, glass ceramics, shales and ceramic utensils to their specific uses
- Show appreciation for the wide range of uses of ceramic materials in daily life

In groups, learners are guided to:
- Name the ceramic material shown in each picture in Figure 3
- Discuss the uses of pottery (household items, decorative objects, construction materials)
- Discuss uses of glass ceramics (cooking, insulators, laboratory equipment), shales (construction, cement, oil/gas) and ceramic utensils (kitchen use)

How do the physical properties of ceramic materials make them suitable for their various uses?

- Longhorn Pre-Technical Studies Grade 8 pg. 78
- Visual aids showing uses of ceramic materials
- Realia and charts

- Oral questions - Observation

Materials for Production

Ceramic Materials - Relating ceramic materials to their use

By the end of the lesson, the learner should be able to:
- Name ceramic materials from pictures and identify their uses
- Relate pottery, glass ceramics, shales and ceramic utensils to their specific uses
- Show appreciation for the wide range of uses of ceramic materials in daily life

In groups, learners are guided to:
- Name the ceramic material shown in each picture in Figure 3
- Discuss the uses of pottery (household items, decorative objects, construction materials)
- Discuss uses of glass ceramics (cooking, insulators, laboratory equipment), shales (construction, cement, oil/gas) and ceramic utensils (kitchen use)

How do the physical properties of ceramic materials make them suitable for their various uses?

- Longhorn Pre-Technical Studies Grade 8 pg. 78
- Visual aids showing uses of ceramic materials
- Realia and charts

- Oral questions - Observation

Materials for Production

Ceramic Materials - Relating ceramic materials to their use

By the end of the lesson, the learner should be able to:
- Identify ceramic items in workplaces during a locality visit
- Describe the uses of pottery, ceramic utensils, glass and shale in the work environment
- Show responsibility and social awareness when visiting workplaces in the locality

In groups, learners are guided to:
- Visit workplaces in the locality and identify pottery, ceramic utensils, glass and shale
- Describe the uses of each ceramic item identified in the workplace
- Share findings with classmates and discuss how ceramic materials contribute to work in the community

In what ways are ceramic materials used in workplaces and households in your locality?

- Longhorn Pre-Technical Studies Grade 8 pg. 79
- Locality workplaces (pottery workshop, kitchen, hardware store)
- Exercise books for recording findings

- Observation - Oral questions

Materials for Production

Ceramic Materials - Common ceramic materials in the locality

By the end of the lesson, the learner should be able to:
- Explain the importance of ceramic materials in day-to-day life
- Identify ceramic items from pictures and state their uses
- Show confidence in applying knowledge of ceramic materials to practical scenarios

In groups, learners are guided to:
- Match each ceramic material to its correct use in the matching activity
- Write summary notes on the importance of ceramic materials and share with classmates
- Answer exercises: state the meaning of ceramics, name and explain uses of ceramic items, identify the property demonstrated when a plate breaks, explain why ceramic beakers are used in laboratories

Why are ceramic materials considered important in both domestic and industrial settings?

- Longhorn Pre-Technical Studies Grade 8 pg. 80
- Exercise books for written responses
- Realia and reference books

- Written test - Peer and self-assessment