Price: 176 points or $1.76 USD
Subjects: math,mathElementary,operationsAndAlgebraicThinking,additionAndSubtraction,counting
Grades: 14,13,1
Description: Subtraction within 12. To subtract- click any snail to make it disappear. Click the number of snails shown by the number after the minus sign. If too many snails are clicked, click them again and they reappear. Type the number of snails left in the white box.