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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 4
Commercial Arithmetic
Simple interest
By the end of the lesson, the learner should be able to:
Calculate simple interest
Apply simple interest formula
Solve basic interest problems
In groups, learners are guided to:
Q/A on interest concepts and terminology
Discussions on principal, rate, and time
Solving basic simple interest problems
Demonstrations of formula application
Explaining interest calculations
Calculators, simple interest charts
Calculators, real-world problem sets
KLB Mathematics Book Three Pg 98-99
1 5
Commercial Arithmetic
Compound interest
By the end of the lesson, the learner should be able to:
Calculate the compound interest
Apply compound interest formula
Understand compounding concepts
In groups, learners are guided to:
Q/A on compound interest principles
Discussions on compounding frequency
Solving basic compound interest problems
Demonstrations of compound calculations
Explaining compounding effects
Calculators, compound interest tables
KLB Mathematics Book Three Pg 102-106
1 6
Commercial Arithmetic
Compound interest
By the end of the lesson, the learner should be able to:
Calculate the compound interest
Solve advanced compound interest problems
Compare simple and compound interest
In groups, learners are guided to:
Q/A on advanced compounding scenarios
Discussions on investment comparisons
Solving complex compound problems
Demonstrations of comparison methods
Explaining investment decisions
Calculators, comparison worksheets
KLB Mathematics Book Three Pg 102-107
1 7
Commercial Arithmetic
Appreciation
Depreciation
By the end of the lesson, the learner should be able to:
Calculate the appreciation value of items
Apply appreciation concepts
Solve appreciation problems
In groups, learners are guided to:
Q/A on appreciation concepts
Discussions on asset value increases
Solving appreciation calculation problems
Demonstrations of value growth
Explaining appreciation applications
Calculators, appreciation examples
Calculators, depreciation charts
KLB Mathematics Book Three Pg 108
2 1
Commercial Arithmetic
Hire purchase
By the end of the lesson, the learner should be able to:
Find the hire purchase
Calculate hire purchase terms
Understand hire purchase concepts
In groups, learners are guided to:
Q/A on hire purchase principles
Discussions on installment buying
Solving basic hire purchase problems
Demonstrations of payment calculations
Explaining hire purchase benefits
Calculators, hire purchase examples
KLB Mathematics Book Three Pg 110-112
2 2
Commercial Arithmetic
Hire purchase
By the end of the lesson, the learner should be able to:
Find the hire purchase
Solve complex hire purchase problems
Calculate total costs and interest charges
In groups, learners are guided to:
Q/A on advanced hire purchase scenarios
Discussions on complex payment structures
Solving challenging hire purchase problems
Demonstrations of cost analysis
Explaining consumer finance decisions
Calculators, complex hire purchase worksheets
KLB Mathematics Book Three Pg 110-112
2 3
Commercial Arithmetic
Circles: Chords and Tangents
Income tax and P.A.Y.E
Length of an arc
By the end of the lesson, the learner should be able to:
Calculate the income tax
Calculate the P.A.Y.E
Apply tax calculation methods
In groups, learners are guided to:
Q/A on tax system concepts
Discussions on income tax and P.A.Y.E systems
Solving tax calculation problems
Demonstrations of tax computation
Explaining taxation principles
Income tax tables, calculators
Geometrical set, calculators
KLB Mathematics Book Three Pg 112-117
2 4
Circles: Chords and Tangents
Length of an arc
By the end of the lesson, the learner should be able to:
Calculate the length of an arc
Solve complex arc length problems
Apply arc concepts to real situations
In groups, learners are guided to:
Q/A on advanced arc applications
Discussions on practical arc measurements
Solving complex arc problems
Demonstrations of real-world applications
Explaining engineering and design uses
Geometrical set, calculators
KLB Mathematics Book Three Pg 124-125
2 5
Circles: Chords and Tangents
Chords
Parallel chords
By the end of the lesson, the learner should be able to:
Calculate the length of a chord
Apply chord properties and theorems
Understand chord-radius relationships
In groups, learners are guided to:
Q/A on chord definition and properties
Discussions on chord calculation methods
Solving basic chord problems
Demonstrations of geometric constructions
Explaining chord theorems
Geometrical set, calculators
KLB Mathematics Book Three Pg 126-128
2 6
Circles: Chords and Tangents
Equal chords
By the end of the lesson, the learner should be able to:
Find the length of equal chords
Apply equal chord theorems
Solve equal chord problems
In groups, learners are guided to:
Q/A on equal chord properties
Discussions on chord equality conditions
Solving equal chord problems
Demonstrations of proof techniques
Explaining theoretical foundations
Geometrical set, calculators
KLB Mathematics Book Three Pg 131-132
2 7
Circles: Chords and Tangents
Intersecting chords
By the end of the lesson, the learner should be able to:
Calculate the length of intersecting chords
Apply intersecting chord theorem
Understand chord intersection properties
In groups, learners are guided to:
Q/A on chord intersection concepts
Discussions on intersection theorem
Solving basic intersection problems
Demonstrations of theorem application
Explaining geometric proofs
Geometrical set, calculators
KLB Mathematics Book Three Pg 132-135
3 1
Circles: Chords and Tangents
Intersecting chords
Chord properties
By the end of the lesson, the learner should be able to:
Calculate the length of intersecting chords
Solve complex intersection problems
Apply advanced chord theorems
In groups, learners are guided to:
Q/A on advanced intersection scenarios
Discussions on complex chord relationships
Solving challenging intersection problems
Demonstrations of advanced techniques
Explaining sophisticated applications
Geometrical set, calculators
KLB Mathematics Book Three Pg 135-139
3 2
Circles: Chords and Tangents
Tangent to a circle
By the end of the lesson, the learner should be able to:
Construct a tangent to a circle
Understand tangent properties
Apply tangent construction methods
In groups, learners are guided to:
Q/A on tangent definition and properties
Discussions on tangent construction
Solving basic tangent problems
Demonstrations of construction techniques
Explaining tangent characteristics
Geometrical set, calculators
KLB Mathematics Book Three Pg 139-140
3 3
Circles: Chords and Tangents
Tangent to a circle
By the end of the lesson, the learner should be able to:
Calculate the length of tangent
Calculate the angle between tangents
Apply tangent measurement techniques
In groups, learners are guided to:
Q/A on tangent calculations
Discussions on tangent measurement
Solving tangent calculation problems
Demonstrations of measurement methods
Explaining tangent applications
Geometrical set, calculators
KLB Mathematics Book Three Pg 141-142
3 4
Circles: Chords and Tangents
Properties of tangents to a circle from an external point
Tangent properties
By the end of the lesson, the learner should be able to:
State the properties of tangents to a circle from an external point
Apply external tangent properties
Solve external tangent problems
In groups, learners are guided to:
Q/A on external tangent concepts
Discussions on tangent properties
Solving external tangent problems
Demonstrations of property applications
Explaining theoretical foundations
Geometrical set, calculators
KLB Mathematics Book Three Pg 142-144
3 5
Circles: Chords and Tangents
Tangents to two circles
By the end of the lesson, the learner should be able to:
Calculate the tangents of direct common tangents
Find direct common tangent properties
Apply two-circle tangent concepts
In groups, learners are guided to:
Q/A on two-circle tangent concepts
Discussions on direct tangent properties
Solving direct tangent problems
Demonstrations of construction methods
Explaining geometric relationships
Geometrical set, calculators
KLB Mathematics Book Three Pg 148-149
3 6
Circles: Chords and Tangents
Tangents to two circles
By the end of the lesson, the learner should be able to:
Calculate the tangents of transverse common tangents
Find transverse tangent properties
Compare direct and transverse tangents
In groups, learners are guided to:
Q/A on transverse tangent concepts
Discussions on tangent type differences
Solving transverse tangent problems
Demonstrations of comparison methods
Explaining tangent classifications
Geometrical set, calculators
KLB Mathematics Book Three Pg 150-151
3 7
Circles: Chords and Tangents
Contact of circles
By the end of the lesson, the learner should be able to:
Calculate the radii of contact circles
Understand internal contact properties
Apply contact circle concepts
In groups, learners are guided to:
Q/A on circle contact concepts
Discussions on internal contact properties
Solving internal contact problems
Demonstrations of contact relationships
Explaining geometric principles
Geometrical set, calculators
KLB Mathematics Book Three Pg 151-153
4 1
Circles: Chords and Tangents
Circle contact
By the end of the lesson, the learner should be able to:
Solve problems involving chords, tangents and contact circles
Integrate all contact concepts
Apply comprehensive contact knowledge
In groups, learners are guided to:
Q/A on comprehensive contact understanding
Discussions on integrated problem-solving
Solving complex contact problems
Demonstrations of systematic approaches
Explaining complete contact mastery
Geometrical set, calculators
KLB Mathematics Book Three Pg 154-157
4 2
Circles: Chords and Tangents
Angle in alternate segment
By the end of the lesson, the learner should be able to:
Calculate the angles in alternate segments
Apply alternate segment theorem
Understand segment angle properties
In groups, learners are guided to:
Q/A on alternate segment concepts
Discussions on segment angle relationships
Solving basic segment problems
Demonstrations of theorem application
Explaining geometric proofs
Geometrical set, calculators
KLB Mathematics Book Three Pg 157-160
4 3
Circles: Chords and Tangents
Circumscribed circle
By the end of the lesson, the learner should be able to:
Construct circumscribed circles
Find circumscribed circle properties
Apply circumscription concepts
In groups, learners are guided to:
Q/A on circumscription concepts
Discussions on circumscribed circle construction
Solving circumscription problems
Demonstrations of construction techniques
Explaining circumscription applications
Geometrical set, calculators
KLB Mathematics Book Three Pg 165
4

Cat one examinations

5 1
Circles: Chords and Tangents
Escribed circles
By the end of the lesson, the learner should be able to:
Construct escribed circles
Find escribed circle properties
Apply escription concepts
In groups, learners are guided to:
Q/A on escription concepts
Discussions on escribed circle construction
Solving escription problems
Demonstrations of construction methods
Explaining escription applications
Geometrical set, calculators
KLB Mathematics Book Three Pg 165-166
5 2
Circles: Chords and Tangents
Centroid
Orthocenter
By the end of the lesson, the learner should be able to:
Construct centroid
Find centroid properties
Apply centroid concepts
In groups, learners are guided to:
Q/A on centroid definition and properties
Discussions on centroid construction
Solving centroid problems
Demonstrations of construction techniques
Explaining centroid applications
Geometrical set, calculators
KLB Mathematics Book Three Pg 166
5 3
Circles: Chords and Tangents
Matrices
Circle and triangle relationships
Introduction and real-life applications
By the end of the lesson, the learner should be able to:
Solve comprehensive circle-triangle problems
Integrate all circle and triangle concepts
Apply advanced geometric relationships
In groups, learners are guided to:
Q/A on comprehensive geometric understanding
Discussions on integrated relationships
Solving complex geometric problems
Demonstrations of advanced applications
Explaining sophisticated geometric principles
Geometrical set, calculators
Old newspapers with league tables, chalk and blackboard, exercise books
KLB Mathematics Book Three Pg 164-167
5 4
Matrices
Order of a matrix and elements
Square matrices, row and column matrices
By the end of the lesson, the learner should be able to:
Determine the order of given matrices
Identify matrix elements by position
Use correct notation for matrix elements
Distinguish between different matrix types
In groups, learners are guided to:
Q/A on matrix structure using grid drawings
Discussions on rows and columns using classroom seating
Solving element location using coordinate games
Demonstrations using drawn grids on blackboard
Explaining position notation using class register
Chalk and blackboard, ruled exercise books, class register
Paper cutouts, chalk and blackboard, counters or bottle tops
KLB Mathematics Book Three Pg 169-170
5 5
Matrices
Addition of matrices
Subtraction of matrices
Combined addition and subtraction
By the end of the lesson, the learner should be able to:
Add matrices of the same order
Apply matrix addition rules correctly
Understand compatibility for addition
Solve matrix addition problems systematically
In groups, learners are guided to:
Q/A on matrix addition using number examples
Discussions on element-wise addition using counters
Solving basic addition using blackboard work
Demonstrations using physical counting objects
Explaining compatibility using size comparisons
Counters or stones, chalk and blackboard, exercise books
Chalk and blackboard, exercise books, number cards made from cardboard
Chalk and blackboard, exercise books, locally made operation cards
KLB Mathematics Book Three Pg 170-171
5 6
Matrices
Scalar multiplication
Introduction to matrix multiplication
Matrix multiplication (2×2 matrices)
By the end of the lesson, the learner should be able to:
Multiply matrices by scalar quantities
Apply scalar multiplication rules
Understand the effect of scalar multiplication
Solve scalar multiplication problems
In groups, learners are guided to:
Q/A on scalar multiplication using times tables
Discussions on scaling using multiplication concepts
Solving scalar problems using repeated addition
Demonstrations using groups of objects
Explaining scalar effects using enlargement concepts
Beans or stones for grouping, chalk and blackboard, exercise books
Chalk and blackboard, rulers for tracing, exercise books
Chalk and blackboard, exercise books, homemade grid templates
KLB Mathematics Book Three Pg 174-175
5 7
Matrices
Matrix multiplication (larger matrices)
By the end of the lesson, the learner should be able to:
Multiply matrices of various orders
Apply multiplication to 3×3 and larger matrices
Determine when multiplication is possible
Calculate products efficiently
In groups, learners are guided to:
Q/A on larger matrix multiplication using patterns
Discussions on efficiency techniques using shortcuts
Solving advanced problems using systematic methods
Demonstrations using organized calculation procedures
Explaining general principles using examples
Chalk and blackboard, large sheets of paper for working, exercise books
KLB Mathematics Book Three Pg 176-179
6 1
Matrices
Properties of matrix multiplication
By the end of the lesson, the learner should be able to:
Understand non-commutativity of matrix multiplication
Apply associative and distributive properties
Distinguish between pre and post multiplication
Solve problems involving multiplication properties
In groups, learners are guided to:
Q/A on multiplication properties using counterexamples
Discussions on order importance using practical examples
Solving property-based problems using verification
Demonstrations using concrete examples
Explaining distributive law using expansion
Chalk and blackboard, exercise books, cardboard for property cards
KLB Mathematics Book Three Pg 174-179
6 2
Matrices
Real-world matrix multiplication applications
Identity matrix
By the end of the lesson, the learner should be able to:
Apply matrix multiplication to practical problems
Solve business and economic applications
Calculate costs, revenues, and quantities
Interpret matrix multiplication results
In groups, learners are guided to:
Q/A on practical applications using local business examples
Discussions on market problems using familiar contexts
Solving real-world problems using matrix methods
Demonstrations using shop keeper scenarios
Explaining result interpretation using meaningful contexts
Chalk and blackboard, local price lists, exercise books
Chalk and blackboard, exercise books, pattern cards made from paper
KLB Mathematics Book Three Pg 176-179
6 3
Matrices
Determinant of 2×2 matrices
By the end of the lesson, the learner should be able to:
Calculate determinants of 2×2 matrices
Apply the determinant formula correctly
Understand geometric interpretation of determinants
Use determinants to classify matrices
In groups, learners are guided to:
Q/A on determinant calculation using cross multiplication
Discussions on formula application using memory aids
Solving determinant problems using systematic approach
Demonstrations using cross pattern method
Explaining geometric meaning using area concepts
Chalk and blackboard, exercise books, crossed sticks for demonstration
KLB Mathematics Book Three Pg 183
6 4
Matrices
Inverse of 2×2 matrices - theory
By the end of the lesson, the learner should be able to:
Understand the concept of matrix inverse
Identify conditions for matrix invertibility
Apply the inverse formula for 2×2 matrices
Understand singular matrices
In groups, learners are guided to:
Q/A on inverse concepts using reciprocal analogy
Discussions on invertibility using determinant conditions
Solving basic inverse problems using formula
Demonstrations using step-by-step method
Explaining singular matrices using zero determinant
Chalk and blackboard, exercise books, fraction examples
KLB Mathematics Book Three Pg 183-185
6 5
Matrices
Inverse of 2×2 matrices - practice
Introduction to solving simultaneous equations
By the end of the lesson, the learner should be able to:
Calculate inverses of 2×2 matrices systematically
Verify inverse calculations through multiplication
Apply inverse properties correctly
Solve complex inverse problems
In groups, learners are guided to:
Q/A on inverse calculation verification methods
Discussions on accuracy checking using multiplication
Solving advanced inverse problems using practice
Demonstrations using verification procedures
Explaining checking methods using examples
Chalk and blackboard, exercise books, scrap paper for verification
Chalk and blackboard, exercise books, equation examples from previous topics
KLB Mathematics Book Three Pg 185-187
6 6
Matrices
Solving 2×2 simultaneous equations using matrices
By the end of the lesson, the learner should be able to:
Solve 2×2 simultaneous equations using matrix methods
Apply inverse matrix techniques
Verify solutions by substitution
Compare matrix method with other techniques
In groups, learners are guided to:
Q/A on matrix solution methods using step-by-step approach
Discussions on solution verification using substitution
Solving 2×2 systems using complete method
Demonstrations using organized solution process
Explaining method advantages using comparisons
Chalk and blackboard, exercise books, previous elimination method examples
KLB Mathematics Book Three Pg 188-190
6 7
Matrices
Advanced simultaneous equation problems
Matrix applications in real-world problems
By the end of the lesson, the learner should be able to:
Solve complex simultaneous equation systems
Handle systems with no solution or infinite solutions
Interpret determinant values in solution context
Apply matrix methods to word problems
In groups, learners are guided to:
Q/A on complex systems using special cases
Discussions on solution types using geometric interpretation
Solving challenging problems using complete analysis
Demonstrations using classification methods
Explaining geometric meaning using line concepts
Chalk and blackboard, exercise books, graph paper if available
Chalk and blackboard, local business examples, exercise books
KLB Mathematics Book Three Pg 188-190
7 1
Matrices
Transpose of matrices
By the end of the lesson, the learner should be able to:
Define and calculate matrix transpose
Understand transpose properties
Apply transpose operations correctly
Solve problems involving transpose
In groups, learners are guided to:
Q/A on transpose concepts using reflection ideas
Discussions on row-column interchange using visual methods
Solving transpose problems using systematic approach
Demonstrations using flip and rotate concepts
Explaining properties using symmetry ideas
Chalk and blackboard, exercise books, paper cutouts for demonstration
KLB Mathematics Book Three Pg 170-174
7 2
Matrices
Matrix equation solving
By the end of the lesson, the learner should be able to:
Solve matrix equations systematically
Find unknown matrices in equations
Apply inverse operations to solve equations
Verify matrix equation solutions
In groups, learners are guided to:
Q/A on equation solving using algebraic analogy
Discussions on unknown determination using systematic methods
Solving matrix equations using step-by-step approach
Demonstrations using organized solution procedures
Explaining verification using checking methods
Chalk and blackboard, exercise books, algebra reference examples
KLB Mathematics Book Three Pg 183-190
7 3
Formulae and Variations
Introduction to formulae
Subject of a formula - basic cases
By the end of the lesson, the learner should be able to:
Define formulae and identify formula components
Recognize formulae in everyday contexts
Understand the relationship between variables
Appreciate the importance of formulae in mathematics
In groups, learners are guided to:
Q/A on familiar formulae from daily life
Discussions on cooking recipes as formulae
Analyzing distance-time relationships using walking examples
Demonstrations using perimeter and area calculations
Explaining formula notation using simple examples
Chalk and blackboard, measuring tape or string, exercise books
Chalk and blackboard, simple balance (stones and stick), exercise books
KLB Mathematics Book Three Pg 191-193
7 4
Formulae and Variations
Subject of a formula - intermediate cases
By the end of the lesson, the learner should be able to:
Make complex variables the subject of formulae
Handle formulae with fractions and powers
Apply multiple inverse operations systematically
Solve intermediate difficulty problems
In groups, learners are guided to:
Q/A on complex rearrangement using systematic approach
Discussions on fraction handling using common denominators
Solving intermediate problems using organized methods
Demonstrations using step-by-step blackboard work
Explaining systematic approaches using flowcharts
Chalk and blackboard, fraction strips made from paper, exercise books
KLB Mathematics Book Three Pg 191-193
7 5
Formulae and Variations
Subject of a formula - advanced cases
By the end of the lesson, the learner should be able to:
Make variables subject in complex formulae
Handle square roots and quadratic expressions
Apply advanced algebraic manipulation
Solve challenging subject transformation problems
In groups, learners are guided to:
Q/A on advanced manipulation using careful steps
Discussions on square root handling using examples
Solving complex problems using systematic approach
Demonstrations using detailed blackboard work
Explaining quadratic handling using factoring
Chalk and blackboard, squared paper patterns, exercise books
KLB Mathematics Book Three Pg 191-193
7 6
Formulae and Variations
Applications of formula manipulation
Introduction to variation
By the end of the lesson, the learner should be able to:
Apply formula rearrangement to practical problems
Solve real-world problems using formula manipulation
Calculate unknown quantities in various contexts
Interpret results in meaningful situations
In groups, learners are guided to:
Q/A on practical applications using local examples
Discussions on real-world formula use in farming/building
Solving application problems using formula rearrangement
Demonstrations using construction and farming scenarios
Explaining practical interpretation using community examples
Chalk and blackboard, local measurement tools, exercise books
Chalk and blackboard, local price lists from markets, exercise books
KLB Mathematics Book Three Pg 191-193
7 7
Formulae and Variations
Direct variation - introduction
By the end of the lesson, the learner should be able to:
Understand direct proportionality concepts
Recognize direct variation patterns
Use direct variation notation correctly
Calculate constants of proportionality
In groups, learners are guided to:
Q/A on direct relationships using simple examples
Discussions on proportional changes using market scenarios
Solving basic direct variation problems
Demonstrations using doubling and tripling examples
Explaining proportionality using ratio concepts
Chalk and blackboard, beans or stones for counting, exercise books
KLB Mathematics Book Three Pg 194-196
8

End of term examinations

9

Marking and closing of school


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