The primary website is www.pictorialmath.com.
This PowerPoint presentation gives an overview of multiple representations. For example, it discusses eight widely used representational systems in the teaching and learning of mathematics:
- Written symbols
- Descriptive written words
- Pictures or diagrams
- Concrete models / manipulatives
- Concrete / Realia
- Spoken language / Oral representation
- School word problems
This is an excellent paper. What I find interesting is that, with the exception of the three examples presented, most of this PowerPoint presentation is targeted towards oral learners, as there are LOTS of words and very little else used in this presentation. As an oral learner myself, I find this appealing, but I have found that even adding a few pictures to slides makes them more attractive and helps many students to learn better.