Counting by Twos, Threes, etc 1.1

In this app, the program voice tells the student (for instance) “Let’s count by eights by clicking on the right numbers. We will start with number 8 and then add 8 each time.” After the student gets to 80 (ten eights), the program voice will say “That’s right. Now let’s count by 8s. 8, 16……..