Simulations

Things you can pull, drag and break. Each simulation works on a phone and maps to a topic in the school science & maths curriculum.

How a mask filters

Let's tweak the mask's filter mesh size and see what happens.

Reshape the track and watch kinetic, potential and thermal energy trade places. Change mass, friction and gravity.

make the batsman hit the ball, you guess where will it land.

drag a point and watch its coordinates, its quadrant and its distances from the two axes change.

drag two points and watch the right triangle between them build the distance formula.

drag two points, watch the midpoint follow, and spot the averaging pattern for yourself.

drag two points, watch the midpoint follow, and spot the averaging pattern for yourself.

drag three points and test whether they are collinear using distances instead of plotting and guessing.

lay out furniture on a coordinate floor plan, read off corner coordinates, and check the door still opens.

adjust the coefficients and watch the atom counts on each side meet, and see why an equation must balance.

dip a metal into a salt solution and see whether it displaces the other metal, discovering the reactivity series.

mix two solutions and watch the ions swap partners, with the insoluble pair settling out as a precipitate.