RESPONSE: The author broke down his presentation into three different sections. After a brief introduction on the importance of Multiple Representation, he started his first section with the eight widely used representational systems used in the teaching and learning of mathematics. He followed with clear examples of three different types of representations, using the multiplication of mixed fractions as his example. And finally, in section three he gives the ten reasons to use Multiple Representations in the Teaching of Mathematics.
After reading several dry and boring articles on Multiple Representation, I found this presentation to be very clear and easy to understand. His mixing of visuals with the way his presentation is broken down was excellent way the different representations interact.