20-Tray

20-Tray
Product Code: 7077A
Availability: In Stock
Price: $40.00
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The 20-Tray demystifies the difficult teen numbers by demonstrating that the sequence and concepts they have internalized regarding numbers 1 to 10 extend to higher numbers, as well. Children discover that the numbers 11-20 are made of ten and some ones, and that the combinations of ten apply to make combinations making twenty e.g. (4+6=10, so 14+6=20).

This is a stand-alone 20-tray containing no blocks. Blocks can be purchased separately.

See also: 20-tray with blocks.