About This Lesson
I get the children to write down 4 2-digit numbers between 52 and 100. They look at the sum on the board; if they have the answer written down they can cross it off. The children will soon realize that the numbers need to be even numbers; not odd.
A well designed and thought out resource. Obviously, it's just a starting point, and the numbers would need altering each time, but this is useful to consolidate the skill of doubling.