Kids are going to get a kick out of these, in fact, I wonder if they’ll actually let these be used as coasters. If used as originally planned, these are fun coasters. This math set consists of 5 coasters, representing the addition, subtraction, multiplication, division and equal sign.
Assuming you can pry these out of the hands of your kids, these novelty coasters will show your mathematical prowess.
[Math Coasters via Geek Sugar]
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