Is easier to draw this cube, rather than to describe in words how to draw it ! We used a squared paper to draw (freehand!) the lines that create the cube, counting six segments to the outer cube and three for the inner cube. While drawing you have to follow the instructions carefully, only in that way it will be possible for everyone to realize this op cube!

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Hi,Great blocks! I love your blog and your nice ideas :-)Have you ever tried to use isometric paper to the project? I used that with my 4th graders – if you want to see, please go to: http://www.frubilledkunst.dk/op-art-del-6-terninger(It's in Danish, but there is a translator and lots of pictures :-)Tina
Hi Tina! Thank you! I had a look at your blog and is very useful!!!Many thanks for your suggestion!