Step 3 Objective
Know all the pairs of factors of any number up to 100.
- Examples of what pupils should
know and be able to do - Probing questions
- What if pupils find
this a barrier?
Probing questions
Which numbers less than 100 have a large number of factors? How would you go about finding all the pairs of factors?
Do all numbers have an even number of factors? Is there anything special about those that have an odd number of factors?
How do you know when you have found all the factors for a given number?