Differentiation

Introduction to Rate of Change

By the end of the lesson, the learner should be able to:

-Understand concept of rate of change in daily life
-Distinguish between average and instantaneous rates
-Identify examples of changing quantities
-Connect rate of change to gradient concepts

-Discuss speed as rate of change of distance
-Examine population growth rates
-Analyze temperature change throughout the day
-Connect to gradients of lines from coordinate geometry

Exercise books
-Manila paper
-Real-world examples
-Graph examples

KLB Secondary Mathematics Form 4, Pages 177-182

Differentiation

Average Rate of Change

By the end of the lesson, the learner should be able to:

-Calculate average rate of change between two points
-Use formula: average rate = Δy/Δx
-Apply to distance-time and other practical graphs
-Understand limitations of average rate calculations

-Calculate average speed between two time points
-Find average rate of population change
-Use coordinate points to find average rates
-Compare average rates over different intervals

Exercise books
-Manila paper
-Calculators
-Graph paper

KLB Secondary Mathematics Form 4, Pages 177-182

Differentiation

Instantaneous Rate of Change

By the end of the lesson, the learner should be able to:

-Understand concept of instantaneous rate
-Recognize instantaneous rate as limit of average rates
-Connect to tangent line gradients
-Apply to real-world motion problems

-Demonstrate instantaneous speed using car speedometer
-Show limiting process using smaller intervals
-Connect to tangent line slopes on curves
-Practice with motion and growth examples

Exercise books
-Manila paper
-Tangent demonstrations
-Motion examples

KLB Secondary Mathematics Form 4, Pages 177-182

Differentiation

Gradient of Curves at Points

By the end of the lesson, the learner should be able to:

-Find gradient of curve at specific points
-Use tangent line method for gradient estimation
-Apply limiting process to find exact gradients
-Practice with various curve types

-Draw tangent lines to curves on manila paper
-Estimate gradients using tangent slopes
-Use the limiting approach with chord sequences
-Practice with parabolas and other curves

Exercise books
-Manila paper
-Rulers
-Curve examples

KLB Secondary Mathematics Form 4, Pages 178-182

Differentiation

Gradient of Curves at Points

By the end of the lesson, the learner should be able to:

-Find gradient of curve at specific points
-Use tangent line method for gradient estimation
-Apply limiting process to find exact gradients
-Practice with various curve types

-Draw tangent lines to curves on manila paper
-Estimate gradients using tangent slopes
-Use the limiting approach with chord sequences
-Practice with parabolas and other curves

Exercise books
-Manila paper
-Rulers
-Curve examples

KLB Secondary Mathematics Form 4, Pages 178-182

Differentiation

Introduction to Delta Notation

By the end of the lesson, the learner should be able to:

-Understand delta (Δ) notation for small changes
-Use Δx and Δy for coordinate changes
-Apply delta notation to rate calculations
-Practice reading and writing delta expressions

-Introduce delta as symbol for "change in"
-Practice writing Δx, Δy, Δt expressions
-Use delta notation in rate of change formulas
-Apply to coordinate geometry problems

Exercise books
-Manila paper
-Delta notation examples
-Symbol practice

KLB Secondary Mathematics Form 4, Pages 182-184

Differentiation

The Limiting Process

By the end of the lesson, the learner should be able to:

-Understand concept of limit in differentiation
-Apply "as Δx approaches zero" reasoning
-Use limiting process to find exact derivatives
-Practice systematic limiting calculations

-Demonstrate limiting process with numerical examples
-Show chord approaching tangent as Δx → 0
-Calculate limits using table of values
-Practice systematic limit evaluation

Exercise books
-Manila paper
-Limit tables
-Systematic examples

KLB Secondary Mathematics Form 4, Pages 182-184

Differentiation

Introduction to Derivatives

By the end of the lesson, the learner should be able to:

-Define derivative as limit of rate of change
-Use dy/dx notation for derivatives
-Understand derivative as gradient function
-Connect derivatives to tangent line slopes

-Introduce derivative notation dy/dx
-Show derivative as gradient of tangent
-Practice derivative concept with simple functions
-Connect to previous gradient work

Exercise books
-Manila paper
-Derivative notation
-Function examples

KLB Secondary Mathematics Form 4, Pages 182-184

Differentiation

Derivative of Linear Functions

By the end of the lesson, the learner should be able to:

-Find derivatives of linear functions y = mx + c
-Understand that derivative of linear function is constant
-Apply to straight line gradient problems
-Verify using limiting process

-Find derivative of y = 3x + 2 using definition
-Show that derivative equals the gradient
-Practice with various linear functions
-Verify results using first principles

Exercise books
-Manila paper
-Linear function examples
-Verification methods

KLB Secondary Mathematics Form 4, Pages 184-188

Differentiation

Derivative of y = x^n (Basic Powers)

By the end of the lesson, the learner should be able to:

-Find derivatives of power functions
-Apply the rule d/dx(x^n) = nx^(n-1)
-Practice with x², x³, x⁴, etc.
-Verify using first principles for simple cases

-Derive d/dx(x²) = 2x using first principles
-Apply power rule to various functions
-Practice with x³, x⁴, x⁵ examples
-Verify selected results using definition

Exercise books
-Manila paper
-Power rule examples
-First principles verification

KLB Secondary Mathematics Form 4, Pages 184-188

Differentiation

Derivative of Constant Functions

By the end of the lesson, the learner should be able to:

-Understand that derivative of constant is zero
-Apply to functions like y = 5, y = -3
-Explain geometric meaning of zero derivative
-Combine with other differentiation rules

-Show that horizontal lines have zero gradient
-Find derivatives of constant functions
-Explain why rate of change of constant is zero
-Apply to mixed functions with constants

Exercise books
-Manila paper
-Constant function graphs
-Geometric explanations

KLB Secondary Mathematics Form 4, Pages 184-188

Differentiation

Derivative of Constant Functions

By the end of the lesson, the learner should be able to:

-Understand that derivative of constant is zero
-Apply to functions like y = 5, y = -3
-Explain geometric meaning of zero derivative
-Combine with other differentiation rules

-Show that horizontal lines have zero gradient
-Find derivatives of constant functions
-Explain why rate of change of constant is zero
-Apply to mixed functions with constants

Exercise books
-Manila paper
-Constant function graphs
-Geometric explanations

KLB Secondary Mathematics Form 4, Pages 184-188

Differentiation

Derivative of Coefficient Functions

By the end of the lesson, the learner should be able to:

-Find derivatives of functions like y = ax^n
-Apply constant multiple rule
-Practice with various coefficient values
-Combine coefficient and power rules

-Find derivative of y = 5x³
-Apply rule d/dx(af(x)) = a·f'(x)
-Practice with negative coefficients
-Combine multiple rules systematically

Exercise books
-Manila paper
-Coefficient examples
-Rule combinations

KLB Secondary Mathematics Form 4, Pages 184-188

Differentiation

Derivative of Polynomial Functions

By the end of the lesson, the learner should be able to:

-Find derivatives of polynomial functions
-Apply term-by-term differentiation
-Practice with various polynomial degrees
-Verify results using first principles

-Differentiate y = x³ + 2x² - 5x + 7
-Apply rule to each term separately
-Practice with various polynomial types
-Check results using definition for simple cases

Exercise books
-Manila paper
-Polynomial examples
-Term-by-term method

KLB Secondary Mathematics Form 4, Pages 184-188

Differentiation

Applications to Tangent Lines

By the end of the lesson, the learner should be able to:

-Find equations of tangent lines to curves
-Use derivatives to find tangent gradients
-Apply point-slope form for tangent equations
-Solve problems involving tangent lines

-Find tangent to y = x² at point (2, 4)
-Use derivative to get gradient at specific point
-Apply y - y₁ = m(x - x₁) formula
-Practice with various curves and points

Exercise books
-Manila paper
-Tangent line examples
-Point-slope applications

KLB Secondary Mathematics Form 4, Pages 187-189

Differentiation

Applications to Normal Lines

By the end of the lesson, the learner should be able to:

-Find equations of normal lines to curves
-Use negative reciprocal of tangent gradient
-Apply to perpendicular line problems
-Practice with normal line calculations

-Find normal to y = x² at point (2, 4)
-Use negative reciprocal relationship
-Apply perpendicular line concepts
-Practice normal line equation finding

Exercise books
-Manila paper
-Normal line examples
-Perpendicular concepts

KLB Secondary Mathematics Form 4, Pages 187-189

Differentiation

Applications to Normal Lines

By the end of the lesson, the learner should be able to:

-Find equations of normal lines to curves
-Use negative reciprocal of tangent gradient
-Apply to perpendicular line problems
-Practice with normal line calculations

-Find normal to y = x² at point (2, 4)
-Use negative reciprocal relationship
-Apply perpendicular line concepts
-Practice normal line equation finding

Exercise books
-Manila paper
-Normal line examples
-Perpendicular concepts

KLB Secondary Mathematics Form 4, Pages 187-189

Differentiation

Introduction to Stationary Points

By the end of the lesson, the learner should be able to:

-Define stationary points as points where dy/dx = 0
-Identify different types of stationary points
-Understand geometric meaning of zero gradient
-Find stationary points by solving dy/dx = 0

-Show horizontal tangents at stationary points
-Find stationary points of y = x² - 4x + 3
-Identify maximum, minimum, and inflection points
-Practice finding where dy/dx = 0

Exercise books
-Manila paper
-Curve sketches
-Stationary point examples

KLB Secondary Mathematics Form 4, Pages 189-195

Differentiation

Types of Stationary Points

By the end of the lesson, the learner should be able to:

-Distinguish between maximum and minimum points
-Identify points of inflection
-Use first derivative test for classification
-Apply gradient analysis around stationary points

-Analyze gradient changes around stationary points
-Use sign analysis of dy/dx
-Classify stationary points by gradient behavior
-Practice with various function types

Exercise books
-Manila paper
-Sign analysis charts
-Classification examples

KLB Secondary Mathematics Form 4, Pages 189-195

Differentiation

Finding and Classifying Stationary Points

By the end of the lesson, the learner should be able to:

-Solve dy/dx = 0 to find stationary points
-Apply systematic classification method
-Use organized approach for point analysis
-Practice with polynomial functions

-Work through complete stationary point analysis
-Use systematic gradient sign testing
-Create organized solution format
-Practice with cubic and quartic functions

Exercise books
-Manila paper
-Systematic templates
-Complete examples

KLB Secondary Mathematics Form 4, Pages 189-195

Differentiation

Curve Sketching Using Derivatives

By the end of the lesson, the learner should be able to:

-Use derivatives to sketch accurate curves
-Identify key features: intercepts, stationary points
-Apply systematic curve sketching method
-Combine algebraic and graphical analysis

-Sketch y = x³ - 3x² + 2 using derivatives
-Find intercepts, stationary points, and behavior
-Use systematic curve sketching approach
-Verify sketches using derivative information

Exercise books
-Manila paper
-Curve sketching templates
-Systematic method

KLB Secondary Mathematics Form 4, Pages 195-197

Differentiation

Introduction to Kinematics Applications

By the end of the lesson, the learner should be able to:

-Apply derivatives to displacement-time relationships
-Understand velocity as first derivative of displacement
-Find velocity functions from displacement functions
-Apply to motion problems

-Find velocity from s = t³ - 2t² + 5t
-Apply v = ds/dt to motion problems
-Practice with various displacement functions
-Connect to real-world motion scenarios

Exercise books
-Manila paper
-Motion examples
-Kinematics applications

KLB Secondary Mathematics Form 4, Pages 197-201

Differentiation

Introduction to Kinematics Applications

By the end of the lesson, the learner should be able to:

-Apply derivatives to displacement-time relationships
-Understand velocity as first derivative of displacement
-Find velocity functions from displacement functions
-Apply to motion problems

-Find velocity from s = t³ - 2t² + 5t
-Apply v = ds/dt to motion problems
-Practice with various displacement functions
-Connect to real-world motion scenarios

Exercise books
-Manila paper
-Motion examples
-Kinematics applications

KLB Secondary Mathematics Form 4, Pages 197-201

Differentiation

Acceleration as Second Derivative

By the end of the lesson, the learner should be able to:

-Understand acceleration as derivative of velocity
-Apply a = dv/dt = d²s/dt² notation
-Find acceleration functions from displacement
-Apply to motion analysis problems

-Find acceleration from velocity functions
-Use second derivative notation
-Apply to projectile motion problems
-Practice with particle motion scenarios

Exercise books
-Manila paper
-Second derivative examples
-Motion analysis

KLB Secondary Mathematics Form 4, Pages 197-201

Differentiation

Motion Problems and Applications

By the end of the lesson, the learner should be able to:

-Solve complete motion analysis problems
-Find displacement, velocity, acceleration relationships
-Apply to real-world motion scenarios
-Use derivatives for motion optimization

-Analyze complete motion of falling object
-Find when particle changes direction
-Calculate maximum height in projectile motion
-Apply to vehicle motion problems

Exercise books
-Manila paper
-Complete motion examples
-Real scenarios

KLB Secondary Mathematics Form 4, Pages 197-201

Differentiation

Introduction to Optimization

By the end of the lesson, the learner should be able to:

-Apply derivatives to find maximum and minimum values
-Understand optimization in real-world contexts
-Use calculus for practical optimization problems
-Connect to business and engineering applications

-Find maximum area of rectangle with fixed perimeter
-Apply calculus to profit maximization
-Use derivatives for cost minimization
-Practice with geometric optimization

Exercise books
-Manila paper
-Optimization examples
-Real applications

KLB Secondary Mathematics Form 4, Pages 201-204

Differentiation

Geometric Optimization Problems

By the end of the lesson, the learner should be able to:

-Apply calculus to geometric optimization
-Find maximum areas and minimum perimeters
-Use derivatives for shape optimization
-Apply to construction and design problems

-Find dimensions for maximum area enclosure
-Optimize container volumes and surface areas
-Apply to architectural design problems
-Practice with various geometric constraints

Exercise books
-Manila paper
-Geometric examples
-Design applications

KLB Secondary Mathematics Form 4, Pages 201-204

Differentiation

Business and Economic Applications

By the end of the lesson, the learner should be able to:

-Apply derivatives to profit and cost functions
-Find marginal cost and marginal revenue
-Use calculus for business optimization
-Apply to Kenyan business scenarios

-Find maximum profit using calculus
-Calculate marginal cost and revenue
-Apply to agricultural and manufacturing examples
-Use derivatives for business decision-making

Exercise books
-Manila paper
-Business examples
-Economic applications

KLB Secondary Mathematics Form 4, Pages 201-204

Differentiation

Advanced Optimization Problems

By the end of the lesson, the learner should be able to:

-Solve complex optimization with multiple constraints
-Apply systematic optimization methodology
-Use calculus for engineering applications
-Practice with advanced real-world problems

-Solve complex geometric optimization problems
-Apply to engineering design scenarios
-Use systematic optimization approach
-Practice with multi-variable situations

Exercise books
-Manila paper
-Complex examples
-Engineering applications

KLB Secondary Mathematics Form 4, Pages 201-204

Matrices and Transformations

Transformation on a Cartesian plane

By the end of the lesson, the learner should be able to:

-Define transformation in mathematics
-Identify different types of transformations
-Plot objects and their images on Cartesian plane
-Relate transformation to movement of objects

-Q/A on coordinate geometry review
-Drawing objects and their images on Cartesian plane
-Practical demonstration of moving objects (reflection, rotation)
-Practice identifying transformations from diagrams
-Class discussion on real-life transformations

Square boards
-Peg boards
-Graph papers
-Mirrors
-Rulers

KLB Secondary Mathematics Form 4, Pages 1-6

Matrices and Transformations

Basic Transformation Matrices
Identification of transformation matrix

By the end of the lesson, the learner should be able to:

-Determine matrices for reflection in x-axis, y-axis, and y=x
-Find matrices for 90°, 180°, 270° rotations about origin
-Calculate translation using column vectors
-Apply enlargement matrices with different scale factors

-Step-by-step derivation of reflection matrices
-Demonstration of rotation matrices using unit square
-Working examples with translation vectors
-Practice calculating images under each transformation
-Group exercises on matrix identification

Square boards
-Peg boards
-Graph papers
-Protractors
-Calculators
Graph papers
-Exercise books
-Matrix examples

KLB Secondary Mathematics Form 4, Pages 1-16

Matrices and Transformations

Two Successive Transformations

By the end of the lesson, the learner should be able to:

-Apply two transformations in sequence
-Understand that order of transformations matters
-Find final image after two transformations
-Compare results of different orders

-Physical demonstration of successive transformations
-Step-by-step working showing AB ≠ BA
-Drawing intermediate and final images
-Practice with reflection followed by rotation
-Group work comparing different orders

Square boards
-Peg boards
-Graph papers
-Colored pencils
-Rulers

KLB Secondary Mathematics Form 4, Pages 15-17

Matrices and Transformations

Complex Successive Transformations
Single matrix of transformation for successive transformations

By the end of the lesson, the learner should be able to:

-Apply three or more transformations in sequence
-Track changes through multiple transformation steps
-Solve complex successive transformation problems
-Understand cumulative effects

-Extended examples with 3-4 transformations
-Students work through complex examples step by step
-Discussion on tracking coordinate changes
-Problem-solving with mixed transformation types
-Practice exercises Ex 1.4 from textbook

Square boards
-Graph papers
-Calculators
-Colored pencils
Calculators
-Matrix multiplication charts
-Exercise books

KLB Secondary Mathematics Form 4, Pages 16-24

Matrices and Transformations

Matrix Multiplication Properties
Identity Matrix and Transformation

By the end of the lesson, the learner should be able to:

-Understand that matrix multiplication is not commutative (AB ≠ BA)
-Apply associative property: (AB)C = A(BC)
-Calculate products of 2×2 matrices accurately
-Solve problems involving multiple matrix operations

-Detailed demonstration showing AB ≠ BA with examples
-Practice calculations with various matrix pairs
-Associativity verification with three matrices
-Problem-solving session with complex matrix products
-Individual practice from textbook exercises

Calculators
-Exercise books
-Matrix worksheets
-Formula sheets
-Graph papers
-Matrix examples

KLB Secondary Mathematics Form 4, Pages 21-24

Matrices and Transformations

Inverse of a matrix

By the end of the lesson, the learner should be able to:

-Calculate inverse of 2×2 matrix using formula
-Understand that AA⁻¹ = A⁻¹A = I
-Determine when inverse exists (det ≠ 0)
-Apply inverse matrices to find inverse transformations

-Formula for 2×2 matrix inverse derivation
-Multiple worked examples with different matrices
-Practice identifying singular matrices (det = 0)
-Finding inverse transformations using inverse matrices
-Problem-solving exercises Ex 1.5

Calculators
-Exercise books
-Formula sheets
-Graph papers

KLB Secondary Mathematics Form 4, Pages 14-15, 24-26

Matrices and Transformations

Determinant and Area Scale Factor

By the end of the lesson, the learner should be able to:

-Calculate determinant of 2×2 matrix
-Understand relationship between determinant and area scaling
-Apply formula: area scale factor =

det(matrix)

-Solve problems involving area changes under transformations

-Determinant calculation practice
-Demonstration using shapes with known areas
-Establishing that area scale factor =

Matrices and Transformations

Area scale factor and determinant relationship

By the end of the lesson, the learner should be able to:

-Establish mathematical relationship between determinant and area scaling
-Explain why absolute value is needed
-Apply relationship in various transformation problems
-Understand orientation change when determinant is negative

-Mathematical proof of area scale factor relationship
-Examples with positive and negative determinants
-Discussion on orientation preservation/reversal
-Practice problems from textbook Ex 1.5
-Verification through direct area calculations

Calculators
-Graph papers
-Formula sheets
-Area calculation tools

KLB Secondary Mathematics Form 4, Pages 26-27

Matrices and Transformations

Shear Transformation

By the end of the lesson, the learner should be able to:

-Define shear transformation and its properties
-Find matrices for shear parallel to x-axis and y-axis
-Calculate images under shear transformations
-Understand that shear preserves area but changes shape

-Physical demonstration using flexible materials
-Derivation of shear transformation matrices
-Drawing effects of shear on rectangles and parallelograms
-Verification that area is preserved under shear
-Practice exercises Ex 1.6

Square boards
-Flexible materials
-Graph papers
-Rulers
-Calculators

KLB Secondary Mathematics Form 4, Pages 10-13, 28-34

Matrices and Transformations

Stretch Transformation and Review

By the end of the lesson, the learner should be able to:

-Define stretch transformation and its matrices
-Calculate effect of stretch on areas and lengths
-Compare and contrast shear and stretch
-Review all transformation types and their properties

-Demonstration using elastic materials
-Finding matrices for stretch in x and y directions
-Comparison table: isometric vs non-isometric transformations
-Comprehensive review of all transformation types
-Problem-solving session covering entire unit

Graph papers
-Elastic materials
-Calculators
-Comparison charts
-Review materials

KLB Secondary Mathematics Form 4, Pages 28-38

Matrices and Transformations
Integration

Stretch Transformation and Review
Introduction to Reverse Differentiation

By the end of the lesson, the learner should be able to:

-Define stretch transformation and its matrices
-Calculate effect of stretch on areas and lengths
-Compare and contrast shear and stretch
-Review all transformation types and their properties

-Demonstration using elastic materials
-Finding matrices for stretch in x and y directions
-Comparison table: isometric vs non-isometric transformations
-Comprehensive review of all transformation types
-Problem-solving session covering entire unit

Graph papers
-Elastic materials
-Calculators
-Comparison charts
-Review materials
-Differentiation charts
-Exercise books
-Function examples

KLB Secondary Mathematics Form 4, Pages 28-38

Integration

Basic Integration Rules - Power Functions
Integration of Polynomial Functions

By the end of the lesson, the learner should be able to:

-Apply power rule for integration: ∫xⁿ dx = xⁿ⁺¹/(n+1) + c
-Understand the constant of integration and why it's necessary
-Integrate simple power functions where n ≠ -1
-Practice with positive, negative, and fractional powers

-Derivation of power rule through reverse differentiation
-Multiple examples with different values of n
-Explanation of arbitrary constant using family of curves
-Practice exercises with various power functions
-Common mistakes discussion and correction

Calculators
-Graph papers
-Power rule charts
-Exercise books
-Algebraic worksheets
-Polynomial examples

KLB Secondary Mathematics Form 4, Pages 223-225

Integration

Finding Particular Solutions

By the end of the lesson, the learner should be able to:

-Use initial conditions to find specific values of constant c
-Solve problems involving boundary conditions
-Apply integration to find equations of curves
-Distinguish between general and particular solutions

-Working examples with given initial conditions
-Finding curve equations when gradient function and point are known
-Practice problems from various contexts
-Discussion on why particular solutions are important
-Problem-solving session with curve-finding exercises

Graph papers
-Calculators
-Curve examples
-Exercise books

KLB Secondary Mathematics Form 4, Pages 223-225

Integration

Introduction to Definite Integrals
Evaluating Definite Integrals

By the end of the lesson, the learner should be able to:

-Define definite integrals using limit notation
-Understand the difference between definite and indefinite integrals
-Learn proper notation: ∫ₐᵇ f(x)dx
-Understand geometric meaning as area under curve

-Introduction to definite integral concept and notation
-Geometric interpretation using simple curves
-Comparison between ∫f(x)dx and ∫ₐᵇf(x)dx
-Discussion on limits of integration
-Basic examples with simple functions

Graph papers
-Geometric models
-Integration notation charts
-Calculators
Calculators
-Step-by-step worksheets
-Exercise books
-Evaluation charts

KLB Secondary Mathematics Form 4, Pages 226-228

Integration

Area Under Curves - Single Functions
Areas Below X-axis and Mixed Regions

By the end of the lesson, the learner should be able to:

-Understand integration as area calculation tool
-Calculate area between curve and x-axis
-Handle regions bounded by curves and vertical lines
-Apply definite integrals to find exact areas

-Geometric demonstration of area under curves
-Drawing and shading regions on graph paper
-Working examples: area under y = x², y = 2x + 3, etc.
-Comparison with approximation methods from Chapter 9
-Practice finding areas of various regions

Graph papers
-Curve sketching tools
-Colored pencils
-Calculators
-Area grids
-Curve examples
-Colored materials
-Exercise books

KLB Secondary Mathematics Form 4, Pages 230-233

Integration

Area Between Two Curves

By the end of the lesson, the learner should be able to:

-Calculate area between two intersecting curves
-Find intersection points as integration limits
-Apply method: Area = ∫ₐᵇ [f(x) - g(x)]dx
-Handle multiple intersection scenarios

-Method for finding curve intersection points
-Working examples: area between y = x² and y = x
-Step-by-step process for area between curves
-Practice with linear and quadratic function pairs
-Advanced examples with multiple intersections

Graph papers
-Equation solving aids
-Calculators
-Colored pencils
-Exercise books

KLB Secondary Mathematics Form 4, Pages 233-235