Learn
Math you can touch.
Three guides, each with a 3D model you can drag, worked examples, the common mistakes, and practice with hints.
The guides
- Pythagorean theoremThe Pythagorean theorem a² + b² = c² explained: what it says, why it works, worked examples, common mistakes and practice — with an interactive model.
- Linear equationsHow to solve linear equations: the balance principle, worked examples (variables on both sides, brackets), common mistakes and practice.
- Linear functionsLinear functions y = mx + b explained: slope, y-intercept, finding a line from two points and common mistakes — with an interactive graph.
- Adding and subtracting fractionsHow to add and subtract fractions: same denominators, finding a common denominator, mixed numbers, worked examples, common mistakes and practice.
- Order of operationsThe order of operations: brackets, powers, multiplication and division left to right, then addition and subtraction. Worked examples, mistakes, practice.
- Mistakes in linear equationsCommon mistakes in linear equations, in students’ own words — “why do I get x = 10?” — what went wrong, and how to fix it. With a check you can do alone.
- Mistakes in linear functionsCommon mistakes with linear functions, in students’ own words — slope upside down, mixed-up order, slope versus intercept — and how to check.
For parents and students
- AI for homeworkAI tools can solve a problem in a second, but an answer isn’t understanding. Here’s how to tell AI that gives answers from AI that helps you learn.
- Helping with homeworkYour child is stuck on math homework? Five questions to ask instead of giving the answer, what to do with mistakes, and what if you’ve forgotten it.