Need to practice math skills from Kindergarten to grade five. Check out the activities on this website. http://www.harcourtschool.com/thinkmath/index.html
Practice counting by 3's. http://www.mathsisfun.com/numbers/fill-missing.php?g=3s36&name=Skip%20Counting%20by%203s%20to%2036
Practice counting by 4's. http://www.mathsisfun.com/numbers/fill-missing.php?g=4s48&name=Skip%20Counting%20by%204s%20to%2048
This website has information for grades K to 6. There are flashcards, worksheets, and other educational items. http://www.eduplace.com/math/mw/