- AMI approved
- Unequalled beauty
- Precise control of error
- Exact isolation of one quality
- Perfect interrelations
-20%summer discount - use coupon SUMMER22 during checkout.
The purpose of this material is to introduce the child to the unit combinations of subtraction. Includes: 1 box containing 5 sets of Negative Bead Stairs, 1 box containing 5 sets of Colored Bead Stairs, 1 box containing 23 Golden Bars Of 10, and 1 box containing 1 Black And White Bead Stair. The 4 boxes fit neatly into a beechwood tray.
|Minimum age||5 years|
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