Free Mathematics Research Talk - Solving Subtraction Problems by Means of Indirect Addition
The next free Mathematics Research Talk No. 9. is on 8 July.
Solving Subtraction Problems by Means of Indirect Addition.
Subtraction problems of the type a – b = ? can be flexibly solved by various strategies. This includes the indirect addition strategy ("how much do I have to add to b to get at a?") which is particularly useful when a and b are close. However, often children do not choose this strategy. Dr Ruth Trundley will explore findings from a collaborative lesson research cycle which expose some of the reasons why this might happen and the challenges associated with addressing this issue.
Also you can catch up on Talks 1-8 here