I was calculating the total number of centimeter cubes that would be needed to build a trinomial cube, and I was puzzled that the total number according to the dimensions given here don’t make a cubic number. (the total was 633, should have been 729 or 9 cubed) On Sue Chen’s website (http://faculty.fullerton.edu/syen/mts/sensor/7.htm) it looks like the total number of blocks should be 27, so 3 were missing from the list given here. I think the dimensions of the missing blocks are three 4 x 4 x 2 blocks.

Thanks so much for posting this information! So helpful! ]]>

Binomial: 343

Trinomial: 633 (343 from binomial + 290)

Both: 976 ]]>

If you have a chance to update your post, I’d be most grateful!

Thanks,

Lori

I’m just starting to make a pile of maths materials (I am jumping about a bit), today I got the wood for the red rods/number rods, and the brown stair and pink tower. I have been figuring that the numbers for the binomial and trinomial cubes must be ‘out there’, but didn’t bother to look _yet_ because I’m not ready… I was looking for something else and your blog was linkedâ€”with exactly what I was hoping to find later:-)

Now to make a note where I will be able to find it when I need it:-)

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