3D Commutative Property 10-Frame Counters

thingiverse

Upper elementary grades will create or modify counters for the attached 10-frame. The lower grades will use the attached 10-frame to practice learning the commutative property in math, i.e. 3 + 2 = 5, 2 + 3 = 5. Included is the .stl files for the Commutative 10-frame with blocks for the children to be able to trace the '+" and "=" sign, and place the numbers appropriately under the counted 10-frame. The lower grades game is cooperative with two students facing each other on either side of the 10-frames. They each take their own counters and place them in the frame. Dice may be used so long as a roll of 6/6 or 5/6 is re-rolled. The student puts the number of counters in their frame, and writes the number sentence from their point of view. The other student does the same. This gives the opposite view, effectively flipping the addends. Upper grades are "toymakers" in a STEM unit designed to last two 45-minute classes. The will work in teams of 2 to design a counter unique to them, copy and paste it 10 times, and work with additional constraints. I have included a set of counters with two marks on the top, if anyone wants to just use this for lower grades. I have included a set of 4 template counters, to allow for differentiation. I have also included a slightly larger 10-frame which was my original 10-frame, but had to size it down to fit on the MakerBot Replicator Mini.