I was wondering if anyone has done any work making pyramids out of craft foam or PVC foam, either solid or hollow?

I remember reading about the problems getting the pyramids approved in the EU because of the points they have.  I also happen to work with very young children, pre-school ages, so letting them go rampant with hard plastic pyramids might not be a great idea.:) (They're good children, but they can get carried away sometimes.)

I want to have the children do a math activity using pyramids (they're fun to play with and stack) to put totals for math problem out.  I know other things could be used, but the tactile stimulation of moving the pyramids around appeals a lot to children, especially when they can stack the pyramids.

I think it could also be interesting to use the pyramids to help the children to visualize multiplication and division (including remainders).  The biggest hinderance with that is that the pyramids only deal (normally) with the numbers 1 - 3.

Any information would be helpful, however, I'm outside the states so it may be prohibitively expensive to have them shipped. (I'm in Taiwan currently.)

 

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http://www.suberic.net/~dmm/games/oihp.html

You could try these origami ones. They go together well with a glue stick. Before inflating them, cut off the blunt end to make them stackable, and put pips on in marker pen. If nothing else this gives you a printable idea of dimensions if you make them with foam and glue.

I made whole stashes of these before I could afford my plastic ones. I suggest printing them on coloured card, as colouring them in is a ball-ache.

Thanks, I hadn't been thinking about the paper pyramids.  I might just go with the cut, fold and glue type for the younger children and I can print them on some heavier card stock instead.  Maybe using the piecepack pyramids as a template.  They do require glueing, but that's a good skill builder for children anyway.:)  Might even be able to print pips on them that way.

Honestly, the  paper will be fine for my older students and they will probably love having their own 'mids bacause I've been getting them hooked on some of the games. (WW5 and IceDice most notably) But I'm still not sure how well that will work for the younger ones.  Pre-kindergarten, although I know that they like playing with the mids if allowed to.  My 4 year old loves to stack and restack them.  When my wife and I were playing IceDice, he kept trying to make trees with the bank. :)

Care to share the details of the activity you worked out?  I'm interested in using pyramids in math class activities as well!

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