Choose a mode
The scale starts balanced. Remove an equal number of crystals from both sides (Left −/+, Right −/+) until the ? stands alone and the beam is level again. Removing unequally tips the heavier side down. Then press Check
The scale starts balanced. Remove an equal number of crystals from both sides (Left −/+, Right −/+) until the ? stands alone and the beam is level again. Removing unequally tips the heavier side down. Then press Check
3D math game · Best for grades 5-6
Remove equal crystals from both sides of the scale until the ? stands alone
The balance model presents equation solving as doing the same action on both sides until the unknown stands alone.
The game builds understanding of Arithmetic. The scale starts balanced. Remove an equal number of crystals from both sides (Left −/+, Right −/+) until the ? stands alone and the beam is level again. Removing unequally tips the heavier side down. Then press Check
calculation, number composition, place value, and basic operations.
Students see the quantity, adjust it directly, and check the result immediately.
This builds number sense instead of relying only on memorized answers.
Use it for individual practice, paired work, or a short class demonstration before worksheets.
Start with the game above, then continue with written practice to reinforce the skill.