Simplifying algebraic expressions Student activity Play

Solving problems – the angles Whiteboard exercise Play

Square roots Student activity Play

Sridhara's method of finding the roots of a quadratic equation Student activity Play

Sridhara's method of finding the roots of a quadratic equation Whiteboard exercise Play

Subtracting decimals using the written method Student activity Play

Subtracting natural numbers using the written method Student activity Play

Sum of angles in a quadrilateral Animation Play

Sum of angles in a triangle Animation Play

Sum of angles in quadrilaterals Student activity Play

Sum of the angles in a cyclic quadrilateral Animation Play

Sum of the angles in a quadrilateral Simulation Play

Sum of the angles in a quadrilateral – proof Animation Play

Sum of the angles in a triangle – proof Animation Play

Sum of two adjacent angles of a parallelogram Animation Play

Supplementary, corresponding and alternate angles Whiteboard exercise Play

Supplementary, vertical, corresponding and alternate angles Student activity Play

Supplementary, vertical, corresponding and alternate angles Whiteboard exercise Play

Surface area of a cylinder Student activity Play

Surface areas of some solids Student activity Play

Tangents to a circle Student activity Play

Test your knowledge about angles Whiteboard exercise Play

Test your knowledge about angles Student activity Play

The angles in a parallelogram and a trapezium Animation Play

The angles of a parallelogram Whiteboard exercise Play