Talk. Watch it draw.

Ask any maths, physics or chemistry question out loud. The board draws while it explains, and you change things by saying so or with the sliders.

Try saying

• “Graph y equals x squared minus three”
• “An object is 20 cm from a convex lens of focal length 15 cm”
• “How does magnesium chloride form?”
• “From 20 m away the angle of elevation of a tower is 60°”

Start talking

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