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.

The Coordinate Plane

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.

break a number down branch by branch until every leaf is prime, and see its unique prime factorisation appear.

enter two numbers and see the shared primes make the HCF and all the primes make the LCM, with the product rule falling out.

drag elements between two sets, pick an operation, and watch the matching region shade live with the result set listed.

see the same set as a listed roster and as a rule in set-builder form, with each number lighting up if it belongs.

toggle ordered pairs on and off and watch whether the relation is reflexive, symmetric, transitive, and so an equivalence relation.

build a mapping between two sets and see whether it is a function, and if so whether it is one-one, onto, or bijective.