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SCHEME OF WORK
Core Mathematics
Grade 10 2026
TERM I
School


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WK LSN STRAND SUB-STRAND LESSON LEARNING OUTCOMES LEARNING EXPERIENCES KEY INQUIRY QUESTIONS LEARNING RESOURCES ASSESSMENT METHODS REFLECTION
10 1
Measurements and Geometry
Trigonometry 1 - Reading tangent from tables
By the end of the lesson, the learner should be able to:

- Determine tangent of acute angles from tables
- Read and interpret mathematical tables correctly
- Apply tangent ratios in calculating heights and distances
In groups, learners are guided to:
- Identify angles in table column
- Read tangent values from main columns
- Use mean difference columns for precision
How do we read tangent values from tables?
- Mentor Core Mathematics Grade 10 pg. 120
- Mathematical tables
- Calculators
- Written tests - Class exercises - Oral questions
10 2
Measurements and Geometry
Trigonometry 1 - Reading sine and cosine from tables
By the end of the lesson, the learner should be able to:

- Determine sine and cosine of acute angles from tables
- Use mean difference correctly
- Apply sine and cosine in solving triangles
In groups, learners are guided to:
- Read sine values from tables
- Read cosine values (subtracting mean difference)
- Practice finding angles given ratios
How do we read sine and cosine from tables?
- Mentor Core Mathematics Grade 10 pg. 122
- Mathematical tables
- Calculators
- Written assignments - Practical work - Observation
10 3
Measurements and Geometry
Trigonometry 1 - Using calculators for trigonometric ratios
By the end of the lesson, the learner should be able to:

- Determine trigonometric ratios using calculators
- Find angles given trigonometric ratios
- Compare calculator and table values
In groups, learners are guided to:
- Set calculator to degree mode
- Find sin, cos, tan of angles
- Use inverse functions to find angles
How do we use calculators for trigonometric ratios?
- Mentor Core Mathematics Grade 10 pg. 126
- Scientific calculators
- Mathematical tables
- Written tests - Class exercises - Oral questions
10 4
Measurements and Geometry
Trigonometry 1 - Complementary angle relationships
By the end of the lesson, the learner should be able to:

- Relate sines and cosines of complementary angles
- Prove that sin θ = cos(90°-θ)
- Apply relationships in solving equations
In groups, learners are guided to:
- Generate table of complementary angles
- Compare sines and cosines
- Establish sin θ = cos(90°-θ)
What is the relationship between sine and cosine of complementary angles?
- Mentor Core Mathematics Grade 10 pg. 128
- Mathematical tables
- Calculators
- Written assignments - Class exercises - Observation
10 5
Measurements and Geometry
Trigonometry 1 - Relating sine, cosine and tangent
By the end of the lesson, the learner should be able to:

- Relate sine, cosine and tangent of acute angles
- Prove that tan θ = sin θ/cos θ
- Apply relationships in solving problems
In groups, learners are guided to:
- Use right-angled triangles
- Derive tan θ = sin θ/cos θ
- Solve problems using the relationship
How are sine, cosine and tangent related?
- Mentor Core Mathematics Grade 10 pg. 129
- Mathematical tables
- Calculators
- Written tests - Oral questions - Class exercises

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