Links:
[1] http://www.thinkfun.com/shop/product/aha-rec-tangle,6,13.htm
[2] http://www.thinkfun.com/sites/default/files/images/product_library/aha_rectangle/AHARecta-Sell-1310.pdf
[3] http://www.thinkfun.com/sites/default/files/images/product_instructions_pdfs/AHARecta-1310-IN02.pdf
[4] http://www.thinkfun.com/sites/default/files/images/product_library/aha_rectangle/AHARecta-1310-solution.pdf
[5] http://www.thinkfun.com/sites/default/files/images/product_library/aha_rectangle/AHARecTa_1310_hires.jpg
[6] http://www.thinkfun.com/sites/default/files/images/product_library/aha_rectangle/AHARecTa_1310_lores.jpg
[7] http://www.thinkfun.com/sites/default/files/images/product_library/aha_rectangle/AHARecTa-1310-Isl-Logo.pdf
[8] http://www.thinkfun.com/sites/default/files/images/banners/ahaRecTangle.jpg