Quadrilaterals – parallelograms and rhombuses Student activity Play

Quadrilaterals – reminder Animation Play

Recoil Simulation Play

Recoil Whiteboard exercise Play

Recoil Student activity Play

Reflection of plane waves Animation Play

Reflection of plane waves Student activity Play

Refraction of plane waves Student activity Play

Refraction of plane waves Animation Play

Relative velocity vectors Student activity Play

Sum of angles in quadrilaterals Student activity Play

Sum of two adjacent angles of a parallelogram Animation Play

Testing Archimedes' Principle Whiteboard exercise Play

Testing Archimedes' Principle Student activity Play

The angles in a parallelogram and a trapezium Animation Play

The angles of a parallelogram Whiteboard exercise Play

The area of a parallelogram Student activity Play

The area of a parallelogram Animation Play

The area of a parallelogram Student activity Play

The area of a parallelogram Whiteboard exercise Play

The area of a plane shape Animation Play

The area of a trapezium Animation Play

The area of a trapezium Student activity Play

The area of a triangle Animation Play

The area of a triangle Student activity Play