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SCHEME OF WORK
Mathematics
Form 3 2026
TERM III
School


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WK LSN TOPIC SUB-TOPIC OBJECTIVES T/L ACTIVITIES T/L AIDS REFERENCE REMARKS
1

Opening school and revision of end of term exams

2 1
Probability
Tree Diagrams
By the end of the lesson, the learner should be able to:
Draw tree diagrams to show the probability space
Construct tree diagrams systematically
Represent sequential events using trees
Apply tree diagram methods
In groups, learners are guided to:
Q/A on tree construction using step-by-step methods
Discussions on sequential event representation
Solving basic tree diagram problems using systematic drawing
Demonstrations using branching examples and visual organization
Explaining tree structure using logical branching principles
Chalk and blackboard, tree diagram templates, branching materials, exercise books
KLB Mathematics Book Three Pg 282
2 2
Probability
Tree Diagrams advanced
By the end of the lesson, the learner should be able to:
Use tree diagrams to find probability
Apply trees to multi-stage problems
Handle complex sequential events
Calculate final probabilities using trees
In groups, learners are guided to:
Q/A on complex tree application using multi-stage examples
Discussions on replacement scenario handling
Solving complex tree problems using systematic calculation
Demonstrations using detailed tree constructions
Explaining systematic probability calculation using tree methods
Chalk and blackboard, complex tree examples, detailed calculation aids, exercise books
KLB Mathematics Book Three Pg 283-285
2 3
Compound Proportion and Rates of Work
Compound Proportions
By the end of the lesson, the learner should be able to:
Find the compound proportions
Understand compound proportion relationships
Apply compound proportion methods systematically
Solve problems involving multiple variables
In groups, learners are guided to:
Q/A on compound relationships using practical examples
Discussions on multiple variable situations using local scenarios
Solving compound proportion problems using systematic methods
Demonstrations using business and trade examples
Explaining compound proportion logic using step-by-step reasoning
Chalk and blackboard, local business examples, calculators if available, exercise books
KLB Mathematics Book Three Pg 288-290
2 4
Compound Proportion and Rates of Work
Compound Proportions applications
By the end of the lesson, the learner should be able to:
Find the compound proportions
Apply compound proportions to complex problems
Handle multi-step compound proportion scenarios
Solve real-world compound proportion problems
In groups, learners are guided to:
Q/A on advanced compound proportion using complex scenarios
Discussions on multi-variable relationships using practical contexts
Solving challenging compound problems using systematic approaches
Demonstrations using construction and farming examples
Explaining practical applications using community-based scenarios
Chalk and blackboard, construction/farming examples, exercise books
KLB Mathematics Book Three Pg 290-291
2 5
Compound Proportion and Rates of Work
Compound Proportions applications
By the end of the lesson, the learner should be able to:
Find the compound proportions
Apply compound proportions to complex problems
Handle multi-step compound proportion scenarios
Solve real-world compound proportion problems
In groups, learners are guided to:
Q/A on advanced compound proportion using complex scenarios
Discussions on multi-variable relationships using practical contexts
Solving challenging compound problems using systematic approaches
Demonstrations using construction and farming examples
Explaining practical applications using community-based scenarios
Chalk and blackboard, construction/farming examples, exercise books
KLB Mathematics Book Three Pg 290-291
2 6
Compound Proportion and Rates of Work
Proportional Parts
By the end of the lesson, the learner should be able to:
Calculate the proportional parts
Understand proportional division concepts
Apply proportional parts to sharing problems
Solve distribution problems using proportional methods
In groups, learners are guided to:
Q/A on proportional sharing using practical examples
Discussions on fair distribution using ratio concepts
Solving proportional parts problems using systematic division
Demonstrations using sharing scenarios and inheritance examples
Explaining proportional distribution using logical reasoning
Chalk and blackboard, sharing demonstration materials, exercise books
KLB Mathematics Book Three Pg 291-293
2 7
Compound Proportion and Rates of Work
Proportional Parts applications
By the end of the lesson, the learner should be able to:
Calculate the proportional parts
Apply proportional parts to complex sharing scenarios
Handle business partnership profit sharing
Solve advanced proportional distribution problems
In groups, learners are guided to:
Q/A on complex proportional sharing using business examples
Discussions on partnership profit distribution using practical scenarios
Solving advanced proportional problems using systematic methods
Demonstrations using business partnership and investment examples
Explaining practical applications using meaningful contexts
Chalk and blackboard, business partnership examples, exercise books
KLB Mathematics Book Three Pg 291-293
2 8
Compound Proportion and Rates of Work
Rates of Work
By the end of the lesson, the learner should be able to:
Calculate the rate of work
Understand work rate relationships
Apply time-work-efficiency concepts
Solve basic rate of work problems
In groups, learners are guided to:
Q/A on work rate calculation using practical examples
Discussions on efficiency and time relationships using work scenarios
Solving basic rate of work problems using systematic methods
Demonstrations using construction and labor examples
Explaining work rate concepts using practical work situations
Chalk and blackboard, work scenario examples, exercise books
KLB Mathematics Book Three Pg 294-295
3 1
Compound Proportion and Rates of Work
Rates of Work and Mixtures
By the end of the lesson, the learner should be able to:
Calculate the rate of work
Apply work rates to complex scenarios
Handle mixture problems and combinations
Solve advanced rate and mixture problems
In groups, learners are guided to:
Q/A on advanced work rates using complex scenarios
Discussions on mixture problems using practical examples
Solving challenging rate and mixture problems using systematic approaches
Demonstrations using cooking, construction, and manufacturing examples
Explaining mixture concepts using practical applications
Chalk and blackboard, mixture demonstration materials, exercise books
KLB Mathematics Book Three Pg 295-296
3 2
Graphical Methods
Tables of given relations
By the end of the lesson, the learner should be able to:
Draw tables of given relations
Construct organized data tables systematically
Prepare data for graphical representation
Understand relationship between variables
In groups, learners are guided to:
Q/A on table construction using systematic data organization
Discussions on variable relationships using practical examples
Solving table preparation problems using organized methods
Demonstrations using data collection and tabulation
Explaining systematic data arrangement using logical procedures
Chalk and blackboard, ruled paper for tables, exercise books
KLB Mathematics Book Three Pg 299
3 3
Graphical Methods
Graphs of given relations
By the end of the lesson, the learner should be able to:
Draw graphs of given relations
Plot points accurately on coordinate systems
Connect points to show relationships
Interpret graphs from given data
In groups, learners are guided to:
Q/A on graph plotting using coordinate methods
Discussions on point plotting and curve drawing
Solving graph construction problems using systematic plotting
Demonstrations using coordinate systems and curve sketching
Explaining graph interpretation using visual analysis
Chalk and blackboard, graph paper or grids, rulers, exercise books
KLB Mathematics Book Three Pg 300
3 4
Graphical Methods
Graphs of given relations
By the end of the lesson, the learner should be able to:
Draw graphs of given relations
Plot points accurately on coordinate systems
Connect points to show relationships
Interpret graphs from given data
In groups, learners are guided to:
Q/A on graph plotting using coordinate methods
Discussions on point plotting and curve drawing
Solving graph construction problems using systematic plotting
Demonstrations using coordinate systems and curve sketching
Explaining graph interpretation using visual analysis
Chalk and blackboard, graph paper or grids, rulers, exercise books
KLB Mathematics Book Three Pg 300
3 5
Graphical Methods
Tables and graphs integration
By the end of the lesson, the learner should be able to:
Draw tables and graphs of given relations
Integrate table construction with graph plotting
Analyze relationships using both methods
Compare tabular and graphical representations
In groups, learners are guided to:
Q/A on integrated table-graph construction using comprehensive methods
Discussions on data flow from tables to graphs
Solving integrated problems using systematic approaches
Demonstrations using complete data analysis procedures
Explaining relationship analysis using combined methods
Chalk and blackboard, graph paper, data examples, exercise books
KLB Mathematics Book Three Pg 299-300
3 6
Graphical Methods
Introduction to cubic equations
By the end of the lesson, the learner should be able to:
Draw tables of cubic functions
Understand cubic equation characteristics
Prepare cubic function data systematically
Recognize cubic curve patterns
In groups, learners are guided to:
Q/A on cubic function evaluation using systematic calculation
Discussions on cubic equation properties using mathematical analysis
Solving cubic table preparation using organized methods
Demonstrations using cubic function examples
Explaining cubic characteristics using pattern recognition
Chalk and blackboard, cubic function examples, exercise books
KLB Mathematics Book Three Pg 301
3 7
Graphical Methods
Graphical solution of cubic equations
By the end of the lesson, the learner should be able to:
Draw graphs of cubic equations
Plot cubic curves accurately
Use graphs to solve cubic equations
Find roots using graphical methods
In groups, learners are guided to:
Q/A on cubic curve plotting using systematic point plotting
Discussions on curve characteristics and root finding
Solving cubic graphing problems using careful plotting
Demonstrations using cubic curve construction
Explaining root identification using graph analysis
Chalk and blackboard, graph paper, cubic equation examples, exercise books
KLB Mathematics Book Three Pg 302-304
3 8
Graphical Methods
Advanced cubic solutions
By the end of the lesson, the learner should be able to:
Draw graphs of cubic equations
Apply graphical methods to complex cubic problems
Handle multiple root scenarios
Verify solutions using graphical analysis
In groups, learners are guided to:
Q/A on advanced cubic graphing using complex examples
Discussions on multiple root identification using graph analysis
Solving challenging cubic problems using systematic methods
Demonstrations using detailed cubic constructions
Explaining verification methods using graphical checking
Chalk and blackboard, advanced graph examples, exercise books
KLB Mathematics Book Three Pg 302-304
4 1
Graphical Methods
Introduction to rates of change
By the end of the lesson, the learner should be able to:
Calculate the average rates of change
Understand rate of change concepts
Apply rate calculations to practical problems
Interpret rate meanings in context
In groups, learners are guided to:
Q/A on rate calculation using slope methods
Discussions on rate interpretation using practical examples
Solving basic rate problems using systematic calculation
Demonstrations using speed-time and distance examples
Explaining rate concepts using practical analogies
Chalk and blackboard, rate calculation examples, exercise books
KLB Mathematics Book Three Pg 304-306
4 2
Graphical Methods
Average rates of change
By the end of the lesson, the learner should be able to:
Calculate the average rates of change
Apply average rate methods to various functions
Use graphical methods for rate calculation
Solve practical rate problems
In groups, learners are guided to:
Q/A on average rate calculation using graphical methods
Discussions on rate applications using real-world scenarios
Solving average rate problems using systematic approaches
Demonstrations using graph-based rate calculation
Explaining practical applications using meaningful contexts
Chalk and blackboard, graph paper, rate examples, exercise books
KLB Mathematics Book Three Pg 304-306
4 3
Graphical Methods
Average rates of change
By the end of the lesson, the learner should be able to:
Calculate the average rates of change
Apply average rate methods to various functions
Use graphical methods for rate calculation
Solve practical rate problems
In groups, learners are guided to:
Q/A on average rate calculation using graphical methods
Discussions on rate applications using real-world scenarios
Solving average rate problems using systematic approaches
Demonstrations using graph-based rate calculation
Explaining practical applications using meaningful contexts
Chalk and blackboard, graph paper, rate examples, exercise books
KLB Mathematics Book Three Pg 304-306
4 4
Graphical Methods
Advanced average rates
By the end of the lesson, the learner should be able to:
Calculate the average rates of change
Handle complex rate scenarios
Apply rates to business and scientific problems
Integrate rate concepts with other topics
In groups, learners are guided to:
Q/A on complex rate applications using advanced scenarios
Discussions on business and scientific rate applications
Solving challenging rate problems using integrated methods
Demonstrations using comprehensive rate examples
Explaining advanced applications using detailed analysis
Chalk and blackboard, advanced rate scenarios, exercise books
KLB Mathematics Book Three Pg 304-310
4 5
Graphical Methods
Introduction to instantaneous rates
By the end of the lesson, the learner should be able to:
Calculate the rate of change at an instant
Understand instantaneous rate concepts
Distinguish between average and instantaneous rates
Apply instant rate methods
In groups, learners are guided to:
Q/A on instantaneous rate concepts using limiting methods
Discussions on instant vs average rate differences
Solving basic instantaneous rate problems
Demonstrations using tangent line concepts
Explaining instantaneous rate using practical examples
Chalk and blackboard, tangent line examples, exercise books
KLB Mathematics Book Three Pg 310-311
4 6
Graphical Methods
Rate of change at an instant
By the end of the lesson, the learner should be able to:
Calculate the rate of change at an instant
Apply instantaneous rate methods systematically
Use graphical techniques for instant rates
Solve practical instantaneous rate problems
In groups, learners are guided to:
Q/A on instantaneous rate calculation using graphical methods
Discussions on tangent line slope interpretation
Solving instantaneous rate problems using systematic approaches
Demonstrations using detailed tangent constructions
Explaining practical applications using real scenarios
Chalk and blackboard, detailed graph examples, exercise books
KLB Mathematics Book Three Pg 310-311
4 7
Graphical Methods
Advanced instantaneous rates
By the end of the lesson, the learner should be able to:
Calculate the rate of change at an instant
Handle complex instantaneous rate scenarios
Apply instant rates to advanced problems
Integrate instantaneous concepts with applications
In groups, learners are guided to:
Q/A on advanced instantaneous applications using complex examples
Discussions on sophisticated rate problems using detailed analysis
Solving challenging instantaneous problems using systematic methods
Demonstrations using comprehensive rate constructions
Explaining advanced applications using detailed reasoning
Chalk and blackboard, advanced rate examples, exercise books
KLB Mathematics Book Three Pg 310-315
4 8
Graphical Methods
Empirical graphs
By the end of the lesson, the learner should be able to:
Draw the empirical graphs
Understand empirical data representation
Plot experimental data systematically
Analyze empirical relationships
In groups, learners are guided to:
Q/A on empirical data plotting using experimental examples
Discussions on real data representation using practical scenarios
Solving empirical graphing problems using systematic methods
Demonstrations using experimental data examples
Explaining empirical analysis using practical interpretations
Chalk and blackboard, experimental data examples, exercise books
KLB Mathematics Book Three Pg 315-316
5 1
Graphical Methods
Advanced empirical methods
By the end of the lesson, the learner should be able to:
Draw the empirical graphs
Apply empirical methods to complex data
Handle large datasets and trends
Interpret empirical results meaningfully
In groups, learners are guided to:
Q/A on advanced empirical techniques using complex datasets
Discussions on trend analysis using systematic methods
Solving challenging empirical problems using organized approaches
Demonstrations using comprehensive data analysis
Explaining advanced interpretations using detailed reasoning
Chalk and blackboard, complex data examples, exercise books
KLB Mathematics Book Three Pg 315-321
5 2
Matrices and Transformation
Matrices of Transformation
By the end of the lesson, the learner should be able to:
-Define transformation and identify types
-Recognize that matrices can represent transformations
-Apply 2×2 matrices to position vectors
-Relate matrix operations to geometric transformations
In groups, learners are guided to:
-Review transformation concepts from Form 2
-Demonstrate matrix multiplication using position vectors
-Plot objects and images on coordinate plane
-Practice identifying transformations from images
Exercise books
-Manila paper
-Ruler
-Pencils
KLB Secondary Mathematics Form 4, Pages 1-5
5 3
Matrices and Transformation
Identifying Common Transformation Matrices
Finding the Matrix of a Transformation
By the end of the lesson, the learner should be able to:
-Identify matrices for reflection, rotation, enlargement
-Describe transformations represented by given matrices
-Apply identity matrix and understand its effect
-Distinguish between different types of transformations
In groups, learners are guided to:
-Use unit square drawn on paper to identify transformations
-Practice with specific matrices like (0 1; 1 0), (-1 0; 0 1)
-Draw objects and images under various transformations
-Q&A on transformation properties
Exercise books
-Manila paper
-Ruler
-String
-Chalk/markers
KLB Secondary Mathematics Form 4, Pages 1-5
5 4
Matrices and Transformation
Using the Unit Square Method
Successive Transformations
By the end of the lesson, the learner should be able to:
-Use unit square to find transformation matrices
-Read matrix elements directly from unit square images
-Apply unit square method to various transformations
-Compare unit square method with algebraic method
In groups, learners are guided to:
-Demonstrate unit square method systematically
-Practice reading transformation matrices from diagrams
-Apply method to reflections, rotations, enlargements
-Compare efficiency of different methods
Exercise books
-Manila paper
-Ruler
-String
-Coloured pencils
KLB Secondary Mathematics Form 4, Pages 6-16
5 5
Matrices and Transformation
Matrix Multiplication for Combined Transformations
Single Matrix for Successive Transformations
By the end of the lesson, the learner should be able to:
-Multiply 2×2 matrices to find combined transformations
-Apply matrix multiplication rules correctly
-Verify combined transformations geometrically
-Solve problems involving multiple transformations
In groups, learners are guided to:
-Practice matrix multiplication systematically on chalkboard
-Verify results by applying to test objects
-Work through complex transformation sequences
-Check computations step by step
Exercise books
-Manila paper
-Ruler
-Chalk/markers
KLB Secondary Mathematics Form 4, Pages 16-24
5 6
Matrices and Transformation
Inverse of a Transformation
By the end of the lesson, the learner should be able to:
-Define inverse transformation conceptually
-Find inverse matrices using algebraic methods
-Apply inverse transformations to return objects to original position
-Verify inverse relationships using matrix multiplication
In groups, learners are guided to:
-Demonstrate inverse transformations geometrically
-Practice finding inverse matrices algebraically
-Verify that A × A⁻¹ = I
-Apply inverse transformations to solve problems
Exercise books
-Manila paper
-Ruler
-Chalk/markers
KLB Secondary Mathematics Form 4, Pages 24-26
5 7
Matrices and Transformation
Properties of Inverse Transformations
By the end of the lesson, the learner should be able to:
-Calculate determinants of 2×2 matrices
-Use determinant formula for matrix inverses
-Identify when inverse matrices exist
-Apply inverse matrix formula efficiently
In groups, learners are guided to:
-Practice determinant calculations on chalkboard
-Use formula: A⁻¹ = (1/det A) × adj A
-Identify singular matrices (det = 0)
-Solve systems using inverse matrices
Exercise books
-Manila paper
-Ruler
-Chalk/markers
KLB Secondary Mathematics Form 4, Pages 24-26
5 8
Matrices and Transformation
Area Scale Factor and Determinant
By the end of the lesson, the learner should be able to:
-Establish relationship between area scale factor and determinant
-Calculate area scale factors for transformations
-Apply determinant to find area changes
-Solve problems involving area transformations
In groups, learners are guided to:
-Measure areas of objects and images using grid paper
-Calculate determinants and compare with area ratios
-Practice with various transformation types
-Verify the relationship: ASF =
det A
6 1
Matrices and Transformation
Shear Transformations
By the end of the lesson, the learner should be able to:
-Define shear transformation and its properties
-Identify invariant lines in shear transformations
-Construct matrices for shear transformations
-Apply shear transformations to geometric objects
In groups, learners are guided to:
-Demonstrate shear using cardboard models
-Identify x-axis and y-axis invariant shears
-Practice constructing shear matrices
-Apply shears to triangles and rectangles
Exercise books
-Cardboard pieces
-Manila paper
-Ruler
KLB Secondary Mathematics Form 4, Pages 28-34
6 2
Matrices and Transformation
Stretch Transformations
By the end of the lesson, the learner should be able to:
-Define stretch transformation and scale factors
-Distinguish between one-way and two-way stretches
-Construct matrices for stretch transformations
-Apply stretch transformations to solve problems
In groups, learners are guided to:
-Demonstrate stretch using rubber bands and paper
-Practice with x-axis and y-axis invariant stretches
-Construct stretch matrices systematically
-Compare stretches with enlargements
Exercise books
-Rubber bands
-Manila paper
-Ruler
KLB Secondary Mathematics Form 4, Pages 28-34
6 3
Matrices and Transformation
Combined Shear and Stretch Problems
By the end of the lesson, the learner should be able to:
-Apply shear and stretch transformations in combination
-Solve complex transformation problems
-Identify transformation types from matrices
-Calculate areas under shear and stretch transformations
In groups, learners are guided to:
-Work through complex transformation sequences
-Practice identifying transformation types
-Calculate area changes under different transformations
-Solve real-world applications
Exercise books
-Manila paper
-Ruler
-Chalk/markers
KLB Secondary Mathematics Form 4, Pages 28-34
6 4
Matrices and Transformation
Isometric and Non-isometric Transformations
By the end of the lesson, the learner should be able to:
-Distinguish between isometric and non-isometric transformations
-Classify transformations based on shape and size preservation
-Identify isometric transformations from matrices
-Apply classification to solve problems
In groups, learners are guided to:
-Compare congruent and non-congruent images using cutouts
-Classify transformations systematically
-Practice identification from matrices
-Discuss real-world applications of each type
Exercise books
-Paper cutouts
-Manila paper
-Ruler
KLB Secondary Mathematics Form 4, Pages 35-38
6 5
Statistics II
Introduction to Advanced Statistics
By the end of the lesson, the learner should be able to:
-Review measures of central tendency from Form 2
-Identify limitations of simple mean calculations
-Understand need for advanced statistical methods
-Recognize patterns in large datasets
In groups, learners are guided to:
-Review mean, median, mode from previous work
-Discuss challenges with large numbers
-Examine real data from Kenya (population, rainfall)
-Q&A on statistical applications in daily life
Exercise books
-Manila paper
-Real data examples
-Chalk/markers
KLB Secondary Mathematics Form 4, Pages 39-42
6 6
Statistics II
Introduction to Advanced Statistics
By the end of the lesson, the learner should be able to:
-Review measures of central tendency from Form 2
-Identify limitations of simple mean calculations
-Understand need for advanced statistical methods
-Recognize patterns in large datasets
In groups, learners are guided to:
-Review mean, median, mode from previous work
-Discuss challenges with large numbers
-Examine real data from Kenya (population, rainfall)
-Q&A on statistical applications in daily life
Exercise books
-Manila paper
-Real data examples
-Chalk/markers
KLB Secondary Mathematics Form 4, Pages 39-42
6 7
Statistics II
Working Mean Concept
By the end of the lesson, the learner should be able to:
-Define working mean (assumed mean)
-Explain why working mean simplifies calculations
-Identify appropriate working mean values
-Apply working mean to reduce calculation errors
In groups, learners are guided to:
-Demonstrate calculation difficulties with large numbers
-Show how working mean simplifies arithmetic
-Practice selecting suitable working means
-Compare results with and without working mean
Exercise books
-Manila paper
-Sample datasets
-Chalk/markers
KLB Secondary Mathematics Form 4, Pages 39-42
6 8
Statistics II
Mean Using Working Mean - Simple Data
By the end of the lesson, the learner should be able to:
-Calculate mean using working mean for ungrouped data
-Apply the formula: mean = working mean + mean of deviations
-Verify results using direct calculation method
-Solve problems with whole numbers
In groups, learners are guided to:
-Work through step-by-step examples on chalkboard
-Practice with student marks and heights data
-Verify answers using traditional method
-Individual practice with guided support
Exercise books
-Manila paper
-Student data
-Chalk/markers
KLB Secondary Mathematics Form 4, Pages 42-48
7 1
Statistics II
Mean Using Working Mean - Frequency Tables
By the end of the lesson, the learner should be able to:
-Calculate mean using working mean for frequency data
-Apply working mean to discrete frequency distributions
-Use the formula with frequencies correctly
-Solve real-world problems with frequency data
In groups, learners are guided to:
-Demonstrate with family size data from local community
-Practice calculating fx and fd systematically
-Work through examples step-by-step
-Students practice with their own collected data
Exercise books
-Manila paper
-Community data
-Chalk/markers
KLB Secondary Mathematics Form 4, Pages 42-48
7 2
Statistics II
Mean for Grouped Data Using Working Mean
By the end of the lesson, the learner should be able to:
-Calculate mean for grouped continuous data
-Select appropriate working mean for grouped data
-Use midpoints of class intervals correctly
-Apply working mean formula to grouped data
In groups, learners are guided to:
-Use height/weight data of students in class
-Practice finding midpoints of class intervals
-Work through complex calculations step by step
-Students practice with agricultural production data
Exercise books
-Manila paper
-Real datasets
-Chalk/markers
KLB Secondary Mathematics Form 4, Pages 42-48
7 3
Statistics II
Advanced Working Mean Techniques
By the end of the lesson, the learner should be able to:
-Apply coding techniques with working mean
-Divide by class width to simplify further
-Use transformation methods efficiently
-Solve complex grouped data problems
In groups, learners are guided to:
-Demonstrate coding method on chalkboard
-Show how dividing by class width helps
-Practice reverse calculations to get original mean
-Work with economic data from Kenya
Exercise books
-Manila paper
-Economic data
-Chalk/markers
KLB Secondary Mathematics Form 4, Pages 42-48
7 4
Statistics II
Introduction to Quartiles, Deciles, Percentiles
By the end of the lesson, the learner should be able to:
-Define quartiles, deciles, and percentiles
-Understand how they divide data into parts
-Explain the relationship between these measures
-Identify their importance in data analysis
In groups, learners are guided to:
-Use physical demonstration with student heights
-Arrange 20 students by height to show quartiles
-Explain percentile ranks in exam results
-Discuss applications in grading systems
Exercise books
-Manila paper
-Student height data
-Measuring tape
KLB Secondary Mathematics Form 4, Pages 49-52
7 5
Statistics II
Introduction to Quartiles, Deciles, Percentiles
By the end of the lesson, the learner should be able to:
-Define quartiles, deciles, and percentiles
-Understand how they divide data into parts
-Explain the relationship between these measures
-Identify their importance in data analysis
In groups, learners are guided to:
-Use physical demonstration with student heights
-Arrange 20 students by height to show quartiles
-Explain percentile ranks in exam results
-Discuss applications in grading systems
Exercise books
-Manila paper
-Student height data
-Measuring tape
KLB Secondary Mathematics Form 4, Pages 49-52
7 6
Statistics II
Calculating Quartiles for Ungrouped Data
By the end of the lesson, the learner should be able to:
-Find lower quartile, median, upper quartile for raw data
-Apply the position formulas correctly
-Arrange data in ascending order systematically
-Interpret quartile values in context
In groups, learners are guided to:
-Practice with test scores from the class
-Arrange data systematically on chalkboard
-Calculate Q1, Q2, Q3 step by step
-Students work with their own datasets
Exercise books
-Manila paper
-Test score data
-Chalk/markers
KLB Secondary Mathematics Form 4, Pages 49-52
7 7
Statistics II
Quartiles for Grouped Data
By the end of the lesson, the learner should be able to:
-Calculate quartiles using interpolation formula
-Identify quartile classes correctly
-Apply the formula: Q = L + [(n/4 - CF)/f] × h
-Solve problems with continuous grouped data
In groups, learners are guided to:
-Work through detailed examples on chalkboard
-Practice identifying quartile positions
-Use cumulative frequency systematically
-Apply to real examination grade data
Exercise books
-Manila paper
-Grade data
-Chalk/markers
KLB Secondary Mathematics Form 4, Pages 49-52
7 8
Statistics II
Deciles and Percentiles Calculations
By the end of the lesson, the learner should be able to:
-Calculate specific deciles and percentiles
-Apply interpolation formulas for deciles/percentiles
-Interpret decile and percentile positions
-Use these measures for comparative analysis
In groups, learners are guided to:
-Calculate specific percentiles for class test scores
-Find deciles for sports performance data
-Compare students' positions using percentiles
-Practice with national examination statistics
Exercise books
-Manila paper
-Performance data
-Chalk/markers
KLB Secondary Mathematics Form 4, Pages 49-52
8

End of term exams

9

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