Mathematics

All the NCSE Mathematics lessons for lower secondary, grouped by form, term and strand: Form 1, Form 2 and Form 3.

For lesson summaries and the curriculum maps, see the full course page: Lower Secondary Maths – Free Lessons (Forms 1–3). Each form also has its own page: Form 1 Maths, Form 2 Maths and Form 3 Maths.

  1. Form 1
    1. Term 1
      1. Number
      2. Sets
      3. Statistics
      4. Algebra
      5. Measurement
      6. Geometry
    2. Term 2
      1. Number
      2. Algebra
      3. Geometry
      4. Statistics
      5. Measurement
      6. Sets
    3. Term 3
      1. Number: Decimals and Percentages
      2. Geometry
      3. Algebra
      4. Number: Consumer Arithmetic
  2. Form 2
    1. Term 1
      1. Number
      2. Algebra
      3. Sets, Relations and Functions
    2. Term 2
      1. Coordinates and Graphs
      2. Geometry: Transformations
      3. Measurement
    3. Rest of Term 2, and Term 3 (coming soon)
  3. Form 3 (coming soon)

Form 1

Form 1 page: Form 1 Maths.

Term 1

Number

  1. Place Value and Number Names: How to Read and Write Large Numbers (up to 999 Million)
  2. Rounding Whole Numbers and Estimating Quantities (Nearest 10, 100, 1,000 and Million)
  3. Types of Numbers: Odd, Even, Prime, Composite, Square, Triangular and Rectangular (Plus Factors and Multiples)
  4. How to Find the HCF and LCM (Listing, Prime Factors, the Ladder Method and Word Problems)

Sets

  1. Sets for Beginners: Set Notation, Types of Sets, Subsets and Venn Diagrams

Statistics

  1. Tally Charts, Frequency Tables, Pictographs and Block Graphs (and How to Find the Mode)

Algebra

  1. Introduction to Algebra: Variables, Constants, Expressions and Substitution
  2. Simplifying Algebraic Expressions: Like Terms, the Four Operations and the Distributive Law

Measurement

  1. Units of Measurement: Standard Units, Metric vs Imperial, and Converting mm, cm, m and km
  2. Perimeter and Area: Squares, Rectangles, Triangles and Compound Shapes

Geometry

  1. Polygons and Tessellations: Names, Properties and How to Make Tessellating Patterns
  2. 3D Shapes: Faces, Edges, Vertices and Nets (and How to Make a Solid From Its Net)

Term 2

Number

  1. What Are Fractions? Numerators, Denominators, Proper and Improper Fractions and Mixed Numbers
  2. Equivalent Fractions: Simplifying, Comparing and Ordering Fractions
  3. Fraction Problems: Adding, Subtracting, Multiplying and Dividing Fractions
  4. Directed Numbers: Negative Numbers on the Number Line, Adding and Subtracting
  5. Multiplying and Dividing Directed Numbers, and Substituting Them into Expressions

Algebra

  1. Number Patterns and Sequences: Finding the nth Term (with Matchstick Patterns)

Geometry

  1. Points, Lines, Line Segments and Rays: Parallel and Perpendicular Lines
  2. Angles as Turns: Degrees, Full, Half and Quarter Turns, and Types of Angles
  3. How to Measure and Draw Angles with a Protractor (Including Reflex Angles)
  4. Triangles: Angle Sum, Types of Triangles and How to Construct Them
  5. Quadrilaterals: Angle Sum, Properties and Types (Square, Rectangle, Rhombus, Parallelogram, Trapezium, Kite)

Statistics

  1. Bar Graphs, Mean, Median and Mode: How to Draw, Read and Average Data

Measurement

  1. Mass and Weight: Grams, Kilograms and Converting Units
  2. Time: 12- and 24-Hour Clocks, Converting Units of Time and Working Out Durations

Sets

  1. Solving Problems with Sets and Venn Diagrams (Both, Only and Neither)

Term 3

Number: Decimals and Percentages

  1. Decimals: Place Value, Number Names, Comparing and Ordering (Tenths, Hundredths and Thousandths)
  2. Rounding Decimals, and Converting Between Fractions and Decimals (Terminating and Recurring Decimals)
  3. Decimal Calculations: Adding, Subtracting, Multiplying and Dividing Decimals (with Money Problems)
  4. Percentages: Converting Fractions, Decimals and Percentages, Comparing Them and Solving Percent Problems

Geometry

  1. Symmetry, Reflection and Translation: Lines of Symmetry, Mirror Images and Sliding Shapes

Algebra

  1. Algebraic Equations: Turning Word Problems into Equations and Solving Linear Equations

Number: Consumer Arithmetic

  1. Consumer Arithmetic: Making $1000 in Bills, Best Buys, Profit and Loss (and Percentage Profit or Loss)
  2. Consumer Arithmetic: Sales Tax (VAT), Discounts and Simple Interest

Form 2

Form 2 page: Form 2 Maths.

Term 1

Number

  1. Integers: Natural Numbers, Whole Numbers and Integers, and Ordering Them on the Number Line
  2. Integer Calculations: Adding, Subtracting, Multiplying and Dividing Integers in Real Life
  3. Laws of Numbers: Commutative, Associative and Distributive Laws, Closure, Identity and Inverse
  4. Significant Figures, Estimation and Mental Maths Strategies
  5. Index Form, Standard Form and Scientific Notation (Positive Powers)
  6. Number Bases: Place Value, Expanded Form, Binary and Converting to Base 10
  7. Adding and Subtracting in Any Base (and Converting to a Common Base)

Algebra

  1. Algebra Review: Variables, Word Statements and Substituting Integers
  2. Simplifying Algebraic Expressions: Terms, Coefficients, Like Terms and Algebra Tiles
  3. Linear Equations: Letters on Both Sides, Brackets and Word Problems
  4. Inequalities: Symbols, Real-Life Meaning and Writing Word Problems as Inequalities
  5. Solving Inequalities and Showing Answers on a Number Line and in Set Builder Notation

Sets, Relations and Functions

  1. Sets: Union, Intersection and Solving Two-Set Venn Diagram Problems
  2. Relations and Arrow Diagrams: Domain, Range, Mappings and Functions
  3. Ordered Pairs: Writing Relations as Pairs, Domain and Range, and Plotting Them

Term 2

Coordinates and Graphs

  1. The Cartesian Plane: Coordinates, Reading and Plotting Points
  2. Graphing Linear Relations and Simple Inequalities

Geometry: Transformations

  1. Translations: Sliding Shapes on a Grid with Column Vectors
  2. Reflections in Horizontal and Vertical Mirror Lines on a Coordinate Grid

Measurement

  1. Measuring: Choosing Instruments and Units, Reading Scales and Accuracy
  2. Converting Units: Metric Units, Metric and Imperial, and Area Units

Rest of Term 2, and Term 3

Coming soon: 8 more lessons in Term 2 (Lessons 22 to 29) and 7 lessons in Term 3.

Form 3

Coming soon: 30 lessons over three terms. See what is planned on the Form 3 Maths page.

Updates

2026/10/24

– Lessons are now grouped under Form 1, Form 2 and Form 3 headings.

– Added the 15 Form 2 Term 1 lessons.

– Added links to the new Form 1, Form 2 and Form 3 pages.

– Tagged the Updates section so it can be hidden.

2026/10/28

– Added Form 2 Term 2 Lessons 16 to 21.

© 2026 Vedesh Kungebeharry. All rights reserved.