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science toy
the hours of fun and satisfaction as they work through the challenges
and finish a bit better than the standard model
allowing you to track time like the Mayans
For more cash and gift card boxes
Fractions Educational Learning Board | STEM Montessori Activity sliding block puzzle science toyThe wood set comes with base, cover, a unit one bar and then rows of that unit one bar cut into , 1 3, , 1 5, 1 6, 1 8, 1 10 increments. The unit one bar also has notched lines in units of 1 40. I use 2 contrasting thick woods for the bars. Maple and alder are shown in the pictures, but I may use alternate woods at times. The frame is made from floorboard, which provides strength and is scratch and water resistant. A wood cover will allow convenient
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