Library
Fractions: meaning and representation
Find out what a fraction really is, how to read it, where to place it on a number line and how to compare it with others, using examples from everyday life.
Decimal numbers
Learn to read, write, compare and calculate with decimal numbers using practical examples taken from everyday life (prices, measurements, marks).
The four operations set out
Learn how to write out addition, subtraction, multiplication and division problems correctly, with step-by-step methods, practical examples and the most common pitfalls.
Whole numbers and the number system
A step-by-step guide to mastering whole numbers: reading, writing, comparing and rounding them without making mistakes.
Motion and forces
Reference frame, velocity, forces and the principle of inertia. The fundamental laws of mechanics. The module on units is a good prerequisite.
Quantities, units and measurement
What we measure, what we use to measure it, and how to record the result. The foundation of all physics. No prior knowledge required.
Discovering Algebra
Performing calculations with letters, simplifying an expression, solving a linear equation. A natural progression from the basics of arithmetic.
The basics of the calculation
Operational priorities, fractions, powers and percentages. Everything you need to calculate correctly, without a calculator. No prior knowledge required.

