domino subtraction
10142011, 01:40 PM


I did my observation on "domino addition." You can do the same thing with subtr. You could show some big dominoes. Discuss how addition allows you to take 2 parts to make one whole but with subtraction you start with the whole and take one part away. Do lots of examples together. Then divide into partners. Give each group a bag of dominoes (5 or 6). Each student could write a subtraction problem. 104= 6 and then 106=4 You can make it higher level by having the kids write addition problems too 4+6= 10 and 6+4 = 10.
For assessment, give them a worksheet with dominoes for them to write problems. I also gave them rectanges and had them make a domino and then write the problem on the back. You can use these as flashcards later. Good luck with whatever you do. You'll do great!
