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Mathematics
Form 4 2025
TERM I
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WK LSN TOPIC SUB-TOPIC OBJECTIVES T/L ACTIVITIES T/L AIDS REFERENCE REMARKS
1

Reporting

1 3
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
Discussions
Solving
Demonstrating
Explaining
Geometrical set,calculator
KLB Mathematics
Book Three
Pg 124-125
1 4-5
Circles: Chords and tangents
Chords
Parallel chords
Equal chords
Intersecting chords
By the end of the lesson, the learner should be able to:
Calculate the length of a chord
Calculate the perpendicular bisector
Find the value of parallel chords
Find the length of equal chords
Calculate the length of intersecting chords
Discussions
Solving
Demonstrating
Explaining
Geometrical set ,calculator
KLB Mathematics
Book Three
Pg 126-128
KLB Mathematics
Book Three
Pg 131-132
1 6
Circles: Chords and tangents
Intersecting chords
Tangent to a circle
By the end of the lesson, the learner should be able to:
Calculate the length of intersecting chords
Construct a tangent to a circle
Discussions
Solving
Demonstrating
Explaining
Geometrical set ,calculator
KLB Mathematics
Book Three
Pg 135-139
1 7
Circles: Chords and tangents
Tangent to a circle
Properties of tangents to a circle from an external point
By the end of the lesson, the learner should be able to:
Calculate the length of tangent
Calculate the angle between tangents
State the properties of tangents to a circle from an external point
Discussions
Solving
Demonstrating
Explaining
Geometrical set ,calculator
KLB Mathematics
Book Three
Pg 141-142
2 1
Circles: Chords and tangents
Tangents to two circles
Tangents to two circles
By the end of the lesson, the learner should be able to:
Calculate the tangents of direct common tangents
Calculate the tangents of transverse common tangents
Discussions
Solving
Demonstrating
Explaining
Geometrical set ,calculator
KLB Mathematics
Book Three
Pg 148-149
2 2
Circles: Chords and tangents
Contact of circles
Contact of circles
By the end of the lesson, the learner should be able to:
Calculate the radii of contact circles
Discussions
Solving
Demonstrating
Explaining
Geometrical set ,calculator
KLB Mathematics
Book Three
Pg 151-153
2 3
Circles: Chords and tangents
Problem solving
Angle in alternate segment
By the end of the lesson, the learner should be able to:
Solve problems involving chords, tangents and contact circles
Calculate the angles in alternate segments
Discussions
Solving
Demonstrating
Explaining
Geometrical set ,calculator
KLB Mathematics
Book Three
Pg 154-157
2 4-5
Circles: Chords and tangents
Angle in alternate segment
Circumscribed circle
Escribed circles
Centroid
By the end of the lesson, the learner should be able to:
Calculate the angles in alternate segments
Construct circumscribed circles
Construct escribed circles
Construct centroid
Discussions
Solving
Demonstrating
Explaining
Geometrical set ,calculator
KLB Mathematics
Book Three
Pg 160-161
KLB Mathematics
Book Three
Pg 165-166
2 6
Circles: Chords and tangents
Vectors II
Orthocenter
Coordinates in two dimensions
By the end of the lesson, the learner should be able to:
Construct orthocenter
Identify the coordinates of appoint in two dimensions
Discussions
Solving
Demonstrating
Explaining
Geometrical set ,calculator
Wire mesh in 3 dimensions
KLB Mathematics
Book Three
Pg 167
2 7
Vectors II
Coordinates in three dimensions
Column vectors
By the end of the lesson, the learner should be able to:
Identify the coordinates of appoint in three dimensions
Find a displacement and represent it in column vector
Discussions
Solving
Demonstrating
Explaining
Wire mesh in 3 dimensions
KLB Mathematics
Book Three
Pg 222
3 1
Vectors II
Position vector
Unit vectors
By the end of the lesson, the learner should be able to:
Calculate the position vector
Express vectors in terms of unit vectors
Discussions
Solving
Demonstrating
Explaining
KLB Mathematics
Book Three
Pg 224
3 2
Vectors II
Unit vectors
Magnitude of a vector in three dimensions
By the end of the lesson, the learner should be able to:
Express vectors in terms of unit vectors
Calculate the magnitude of a vector in three dimensions
Discussions
Solving
Demonstrating
Explaining
calculators
KLB Mathematics
Book Three
Pg 226-228
3 3
Vectors II
Parallel vectors
Collinear points
By the end of the lesson, the learner should be able to:
Identify parallel vectors
Show that points are collinear
Discussions
Solving
Demonstrating
Explaining
Geoboard
KLB Mathematics
Book Three
Pg 231-232
3 4-5
Vectors II
Collinear points
Proportion division of a line
Proportion division of a line
Proportion division of a line
By the end of the lesson, the learner should be able to:
Show that points are collinear
Divide a line internally in the given ratio
Divide a line externally in the given ratio
Divide a line internally and externally in the given ratio
Discussions
Solving
Demonstrating
Explaining
Geoboard
Geoboard, calculators
KLB Mathematics
Book Three
Pg 233-234
KLB Mathematics
Book Three
Pg 238
3 6
Vectors II
Ratio theorem
Ratio theorem
By the end of the lesson, the learner should be able to:
Express position vectors
Find the position vector
Discussions
Solving
Demonstrating
Explaining
Geoboard, calculators
KLB Mathematics
Book Three
Pg 240
3 7
Vectors II
Mid-point
Ratio theorem
Ratio theorem
By the end of the lesson, the learner should be able to:
Find the mid-points of the given vectors
Use ratio theorem to find the given vectors
Discussions
Solving
Demonstrating
Explaining
Geoboard, calculators
KLB Mathematics
Book Three
Pg 243
4 1
Vectors II
Applications of vectors
Applications of vectors
By the end of the lesson, the learner should be able to:
Use vectors to show the diagonals of a parallelogram
Use vectors to show the diagonals of a rectangle
Discussions
Solving
Demonstrating
Explaining
Geoboard, calculators
KLB Mathematics
Book Three
Pg 248-249
4 2
Probability
Experimental probability
Experimental probability
By the end of the lesson, the learner should be able to:
Calculate the experimental probability
Discussions
Solving
Demonstrating
Explaining
Calculators
KLB Mathematics
Book Three
Pg 262-264
4 3
Probability
Range of probability measure
Probability space
By the end of the lesson, the learner should be able to:
Calculate the range of probability measure
Calculate the probability space for the theoretical probability
Discussions
Solving
Demonstrating
Explaining
Calculators
Calculators, charts
KLB Mathematics
Book Three
Pg 265-266
4 4-5
Probability
Probability space
Combined events
Combined events
Independent events
By the end of the lesson, the learner should be able to:
Calculate the probability space for the theoretical probability
Find the probability of a combined events
Find the probability of a combined events
Find the probability of independent events
Discussions
Solving
Demonstrating
Explaining
Calculators, charts
KLB Mathematics
Book Three
Pg 268-270
KLB Mathematics
Book Three
Pg 273-274
4 6
Probability
Independent events
Independent events
By the end of the lesson, the learner should be able to:
Find the probability of independent events
Discussions
Solving
Demonstrating
Explaining
Calculators, charts
KLB Mathematics
Book Three
Pg 276-277
4 7
Probability
Tree diagrams
Tree diagrams
By the end of the lesson, the learner should be able to:
Draw tree diagrams to show the probability space
Use tree diagrams to find probability
Discussions
Solving
Demonstrating
Explaining
Calculators, charts
KLB Mathematics
Book Three
Pg 282
5 1
Probability
Compound proportions and rate of work
Tree diagrams
Compound proportions
By the end of the lesson, the learner should be able to:
Use tree diagrams to find probability
Find the compound proportions
Discussions
Solving
Demonstrating
Explaining
Calculators, charts
Calculators 
KLB Mathematics
Book Three
Pg 283-285
5 2
Compound proportions and rate of work
Compound proportions
Proportional parts
By the end of the lesson, the learner should be able to:
Find the compound proportions
Calculate the proportional parts
Discussions
Solving
Demonstrating
Explaining
Calculators 
KLB Mathematics
Book Three
Pg 290-291
5 3
Compound proportions and rate of work
Rates of work
Rates of work
By the end of the lesson, the learner should be able to:
Calculate the rate of work
Discussions
Solving
Demonstrating
Explaining
Calculators 
KLB Mathematics
Book Three
Pg 294-295
5 4-5
Compound proportions and rate of work
Graphical methods
Rates of work
Tables of given relations
Graphs of given relations
Graphical solution of cubic equations
By the end of the lesson, the learner should be able to:
Calculate the rate of work
Draw tables of given relations
Draw graphs of given relations
Draw tables of cubic functions
Discussions
Solving
Demonstrating
Explaining
Calculators 
Geoboard & graph books
KLB Mathematics
Book Three
Pg 295-296
KLB Mathematics
Book Three
Pg 300
5 6
Graphical methods
Graphical solution of cubic equations
Average rates of change
By the end of the lesson, the learner should be able to:
Draw graphs of cubic equations
Calculate the average rates of change
Discussions
Solving
Demonstrating
Explaining
Geoboard & graph books
KLB Mathematics
Book Three
Pg 302-304
5 7
Graphical methods
Rate of change at an instant
Empirical graphs
By the end of the lesson, the learner should be able to:
Calculate the rate of change at an instant
Draw the empirical graphs
Discussions
Solving
Demonstrating
Explaining
Geoboard & graph books
KLB Mathematics
Book Three
Pg 310-311
6 1
Graphical methods
Reduction of non-linear laws to linear form
Reduction of non-linear laws to linear form
By the end of the lesson, the learner should be able to:
Draw the graphs of reduction of non-linear laws to linear form
Discussions
Solving
Demonstrating
Explaining
Geoboard & graph books
KLB Mathematics
Book Three
Pg 318-321
6 2
Graphical methods
Reduction of non-linear laws to linear form
Equation of a circle
By the end of the lesson, the learner should be able to:
Draw the graphs of reduction of non-linear laws to linear form
Find the equation of a circle
Discussions
Solving
Demonstrating
Explaining
Geoboard & graph bookss
Geoboard & graph books
KLB Mathematics
Book Three
Pg 318-321
6 3
Graphical methods
Matrices and Transformation
Equation of a circle
Equation of a circle
Transformation on a Cartesian plane
By the end of the lesson, the learner should be able to:
Find the equation of a circle
Relate image and objects under a given
transformation on the Cartesian plane
Discussions
Solving
Demonstrating
Explaining
Drawing objects and
their images on
Cartesian plane
Practice Ex 1.1 P5
Geoboard & graph books
Square boards
Peg boards and strings
Rubber band
KLB Mathematics
Book Three
Pg 327-328
6 4-5
Matrices and Transformation
Identification of transformation matrix
Successive transformation
Single matrix of transformation for successive transformation
By the end of the lesson, the learner should be able to:


Determine the matrix of a
transformation
Perform successive transformation
Determine and identify a single matrix
for successive transformation

Practice exercise
KLB EX 1.2 and 1.3
Drawing objects and its
successive images
KLB Ex 1.4

Square boards
Peg boards and strings
Rubber band
- K.M, Advancing in
Math F4 Pg 3-9
- KLB Pg 6-16 
- K.M, Advancing in
Math F4 Pg 15-17
- KLB Pg 16-24 
6 6
Matrices and Transformation
Relate Identity Matrix and Transformation
Inverse of a matrix area scale factor and determinant of a matrix
By the end of the lesson, the learner should be able to:
Relate identity matrix and
transformation
Determine the inverse of a
Practice exercise Ex 1.4
KLB BK 4
Practice exercise Ex 1.5
Calculators
- K.M, Advancing in
Math F4 Pg 13-14
- KLB Pg 22-24 
6 7
Matrices and Transformation
Area of scale factor and determinant of a matrix
By the end of the lesson, the learner should be able to:


Establish and use the relationship between
area scale factor and determinant of a
matrix


Practice exercise Ex 1.5
KLB BK 4 pg 27

Boards and strings
Peg boards and strings
Rubber band
Calculators
- K.M, Advancing in
Math F4 Pg 17-19
- KLB Pg 26-27 
7-9

Midterm exam and reporting

9 2
Matrices and Transformation
Shear and stretch
By the end of the lesson, the learner should be able to:


Determine shear and stretch

Drawing objects and
images under shear and
stretch. Ex 1.6

Square boards
Peg boards and strings
Rubber band
Calculators
- K.M, Advancing in
Math F4 Pg 10-13
- KLB Pg 28-34 
9 3
Statistics
Ogive
By the end of the lesson, the learner should be able to:


Use cumulative frequency tables to
Draw the ogive

Drawing cumulative
frequency curve (ogive)
KLB Pg 4, Ex. 2.2

Square boards
Graph papers
- K.M, Advancing in
Math F4 Pg 28-29
- KLB Pg 51-52 
9 4-5
Statistics
Median
Quartile
Range- inter quartile range
By the end of the lesson, the learner should be able to:
Estimate the median and quartiles by
Calculations
Ogive
Estimate median and quartiles by
ogive


Define and calculate measure of
dispersion-range, quartiles and
inter-quartile range
Practice exercise
KLB Pg 4, Ex. 2.2

Practice exercise
KLB Pg 4, Ex. 2.2
Square boards
Graph papers
Calculators
- K.M, Advancing in
Math F4 Pg 29-31
- KLB Pg 48 
- K.M, Advancing in
Math F4 Pg 32-33
- KLB BK 4 
9 6
Statistics
Quartile deviation
By the end of the lesson, the learner should be able to:


Define and calculate measures of
dispersion ? quartile deviation

Practice exercise
KLB Pg 4, Ex. 2.2

Calculators
- K.M, Advancing in
Math F4 Pg 34-35
- KLB Bk4 Pg 57-59 
9 7
Statistics
Variance
By the end of the lesson, the learner should be able to:


Define and calculate measures of
Dispersion, variance interpret measure
of dispersion

Practice exercise
KLB Pg 4, Ex. 2.2

Calculators
- K.M, Advancing in
Math F4 Pg 34-35
- KLB Bk4 Pg 57-59 
10 1
Statistics
Standard deviation
By the end of the lesson, the learner should be able to:


- Define and calculate measures of
dispersion, standard deviation
- Interpret measures of dispersion


Ex. 2.3
Exams ? CATS


Calculators
- K.M, Advancing in
Math F4 Pg 34-39
- KLB Bk4 Pg 60 
10 2
Loci
Common types of Loci
Perpendicular bisector Loci
By the end of the lesson, the learner should be able to:
Define locus
Describe common types of loci
Practice exercise
KLB Pg 4, Ex. 3.2
Geometrical patterns
- K.M, Advancing in
Math F4 Pg 40-41
- KLB Bk4 Pg 68 
10 3
Loci
Loci of a point at a given distance from a fixed point and fixed line
By the end of the lesson, the learner should be able to:


Describe common types of loci

Practice exercise
KLB Pg 4, Ex. 3.2

Geometrical patterns
- K.M, Advancing in
Math F4 Pg 40
- KLB Bk4 Pg 70-71 
10 4-5
Loci
Angle bisector Loci
Constant angle loci
By the end of the lesson, the learner should be able to:


Describe common types of loci

Practice exercise
KLB Pg 4, Ex. 3.2

Geometrical patterns
- K.M, Advancing in
Math F4 Pg 41
- KLB Bk4 Pg 71-72 
- K.M, Advancing in
Math F4 Pg 42-43
- KLB Bk4 Pg 72-74 
10 6
Loci
Construction:- loci of the equalities
By the end of the lesson, the learner should be able to:


Construct loci

Involving inequalities

Geometrical
instruments
- K.M, Advancing in
Math F4 Pg 49 
10 7
Loci
Trigonometry
Loci involving chords
Loci under given conditions including intersecting chords
Trigonometric ratios
By the end of the lesson, the learner should be able to:
Construct loci involving chords
Construct loci involving intersecting
Loci and under given conditions
Recall and define trigonometric ratios
Practice exercise
KLB Pg 4, Ex. 3.5
KLB Pg 4, Ex. 3.4
KLB Pg 4, Ex. 4.1
Advancing BK 4, Ex. 4.1
Geometrical
instruments
Chart illustrating
Trigonometric ratios
- K.M, Advancing in
Math F4 Pg 45-47
- KLB Bk4 Pg 84 
11-12

Endterm exam


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