Constructing an optical illusion using Mathomat. When Emma draws a table cloth into the background her perception of the size of two bowls which she has drawn using Mathomat changes.
This investigation is helpful because:
- We often make the mistake of thinking we can do a maths problem instantly.
- It reminds us that when we use Mathomat we draw what’s in our mind (in this case Emma’s perceived bowl) not what is actually there (the physical bowl).
Mental imagery takes time to develop, and it can become complicated. It is an important reason for allowing sufficient time to solve mathematical problems