Customizable and perfect for on-the-go learning, the Multiplication Master Electronic Flash Card is a great way to sharpen your times tables skills. Select the numbers you want to practice: you've got 60 seconds to answer as many multiplication facts as you can. Reach the high score and you're a math master! Two skill level options. Ages 7-10 / Grades 2-4. Requires 3 AAA batteries (not included).