Price: 176 points or $1.76 USD
Subjects: math,mathElementary,operationsAndAlgebraicThinking,additionAndSubtraction
Grades: 13,1,2
Description: Subtraction within 12. Subtract by clicking an ice cube to make it disappear. Type the number of ice cubes left in the box under the equation. If too many ice cubes are clicked, click them again and they will reappear.