Virginia Department of Education
Integers: Addition and Subtraction
Young mathematicians construct their own understanding of integers with an inquiry-based math lesson. Using colored chips to represent positive and negative numbers, children model a series of addition and subtraction problems as...
E-learning for Kids
E Learning for Kids: Math: Pizza (Italian) Restaurant: Subtraction
In this interactive site students get to practice with various math skills in a real life scenario. Those skills include basic subtraction facts using materials, matching number sentences to pictorial representations, and writing number...