This sample chapter from Hurst's book Picturing Math is an excellent resource for using picture books and activities for learning computation.

This engaging lesson plan introduces young scholars to basic addition and subtraction by adding or subtracting one. Teachers can create a free Sumdog account and usernames for their students to practice the skills through online learning...

Second graders love to shop! Students will use their own shopping list to compose a word problem using addition and subtraction with and without regrouping, in order to help them better understand how to problem solve.

Find here flashcards for addition, subtraction, multiplication, and division for printing off and coloring.