Maths explained with pictures and worked examples, from Pythagoras to word problems. Each post goes with a letsBug video and ends with practice questions.
- Pythagoras Theorem Visual Proof: Why a² + b² = c²: See why a² + b² = c² by moving four triangles inside a square. Then find any missing side, test for a right angle and dodge the classic mix-up.
- SOH CAH TOA: How to Know Which Trig Ratio to Use: Label the sides from the angle, tick the side you know and the one you want, and they pick sin, cos or tan. Worked examples, step by step.
- How to write equations from word problems in 4 steps: How to write equations from word problems: name the unknown, translate, find what's equal, test it. And why 5 less than x is x − 5, not 5 − x.
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