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Children use the Subtraction Strip Board by selecting subtraction combinations of one through eighteen
The beads are plastic and the bar is made from copper
100 sheets of division tables for the numbers 1-81 for use with the Division Bead Board
What's in the box4 x wooden bars5 x knobbed cylinder each
• Recommended Ages: 8 months and up
Object Permanence Box With Tray Children use the Subtraction StripThis material develops hand eye coordination and indirectly allows the child to experience object permanence. It practices precise hand movements while sending information to the brain as well as develops hand, wrist and finger control also known as "refined hand movements". With repeated use of this material, the child learns how it feels to succeed when he has achieved a goal on his own. The set consists of a box with two holes, a tray, and a red
