Experience Multiplication
We all experience addition. It's a natural extension of counting. It's really well linked to our language and we are all bound to have lots of examples of real experiences that fit the idea of addition (or subtraction). Money is a good example. We have to be able to add and subtract money and do it regularly. Multiplication is a bit more complex. We can experience it as repeated addition. To use money as an example, though we might think of getting multiple 5ps together as multiplication, it is indistinguishable from repeated addition (which can be thought of as a form of mulitplication but does not require us to expand our concept to use it. We can experience it as arrays or as rectangles but we can't manipulate them so easily.
With Prime Colours, you can bring abstract multiplication out of your head and into the real world. Once you've experienced the system, you won't believe how easy it all is.