- Grade 3: http://thesingaporemaths.com/p3math1f.swf
- More of the same on different grade levels: http://thesingaporemaths.com/index.html
- This explanation looks very much like my "dots and sticks" for regrouping: http://www.eduplace.com/math/mthexp/g4/mathbkg/pdf/mb_g4_u2.pdf
- Thinking Blocks: http://www.thinkingblocks.com/
- Multiplication and Division Problems with Thinking Blocks Sample: http://www.thinkingblocks.com/ThinkingBlocks_MD/TB_MD_Main.html
- Let's Play Math Blog on Drawing Diagrams to solve problems: http://letsplaymath.wordpress.com/2007/10/02/pre-algebra-problem-solving-3rd-grade/
- Video on 8-Step Drawing Process (describing info in book)http://www.crystalspringsbooks.com/videosamples/bhogan.htm and description of the book
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