A full scaffolded lesson on identifying factors, multiples and prime numbers, leading into prime factor decomposition and finding the highest common factor (HCF) and lowest common multiple (LCM) of given numbers. 1->100 grids and homework included.

Credit to deselby for the plenary.

Note: This resource could be broken down into different lessons. It was designed for a 3 hour college lecture.

Please do leave feedback! Thank you.