Hands-on learning

A little room to experiment.

Change a value, notice a pattern and see the reasoning. Ten tools to help an abstract idea take shape.

Interactive tool · 01

Split a whole into equal parts. Change the numerator and denominator to see how much is selected.

Interactive tool · 02

Explore the saving and remaining price as you change an original price or discount.

Interactive tool · 03

Build an equation ax + b = c, then watch the same operation act on both sides.

Interactive tool · 04

Convert lengths, masses, volumes and speeds. Choose units of the same type.

Interactive tool · 05

Move two points numerically and see the straight line, its rise, its run and its gradient.

Interactive tool · 06

Change two angles to construct a triangle and find the third. The side lengths in the drawing are illustrative.

Interactive tool · 07

Explore constant acceleration. The graph shows velocity against time; the signed area is displacement.

Interactive tool · 08

Set the forces on a block. Arrows show their directions; the resultant controls acceleration.

Interactive tool · 09

Change the voltage and resistance of a virtual circuit. Compare current and power.

Interactive tool · 10

Explore how frequency changes wavelength at a fixed wave speed. The static trace is readable without animation.