A complete lesson for first teaching pupils how to express a number as a product of its prime factors using a factor tree.

Activities included:

Starter:
Three puzzles relating to prime numbers, intended to increase pupils’ familiarity with them.

Main:
Examples and questions (with a progression of difficulty and some intrigue).

Plenary
A ‘spot the mistake’ question.

No worksheets required and answers included throughout.

Please review it if you buy as any feedback is appreciated!