The sum of a finite geometric series – problems Student activity Play

The sum of an infinite series – a definition Whiteboard exercise Play

The sum of an infinite series – a definition Student activity Play

The sum to n consecutive positive integers Whiteboard exercise Play

The sum to n consecutive positive integers Whiteboard exercise Play

The sum to n terms of an arithmetic progression Student activity Play

The sum to n terms of an arithmetic progression – activities Student activity Play

The sum to n consecutive positive integers Student activity Play

The sum to n terms of an arithmetic progression Whiteboard exercise Play

The sum to n terms of an arithmetic progression – activitiy Whiteboard exercise Play

The term-to-term definition of the sequence Whiteboard exercise Play

The terms of the Fibonacci sequence Whiteboard exercise Play

The terms of the sequence Whiteboard exercise Play

The tetrahedron Whiteboard exercise Play

The velocity of wave propagation Student activity Play

The velocity of wave propagation Whiteboard exercise Play

The vertex of a parabola Whiteboard exercise Play

The vertex of a parabola Student activity Play

The  nth term of an arithmetic progression Whiteboard exercise Play

The  nth term rule for the geometric sequence Whiteboard exercise Play

Triangular numbers Whiteboard exercise Play

Triangular numbers Student activity Play

Using a trick Animation Play

Using a trick in finding roots Student activity Play

Using arithmetic series to identify the sequence Whiteboard exercise Play