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 Printable Version for your convenience!
Title - To Regroup or Not to Regroup?
By - Candace Hooks
Primary Subject - Math
Secondary Subjects -
Grade Level - 2-3
Materials: Two number cubes, pencil, and paper for each pair of students.
After your students have a basic knowledge of regrouping, have them get in pairs and play this game.
The first student rolls the number cubes and calls out the number he/she has rolled (i.e. if he/she rolls a 2 and an 8, he/she would call out either 28, or 82). The students both write this number on their papers. The first student then rolls both number cubes again and repeats the process for the second addend. Then both students decide if they must regroup to solve the problem. They solve it together.
Then the second student rolls the number cubes and repeats the process. The students continue play for a designated amount of time. When time is up, see which group completed the most problems correctly in the given amount of time.
As a follow up discussion, I ask my students to recognize a pattern as to when they had to regroup and when they didn't. They should derive that when they choose the higher numbers to be in the ones place, they must regroup.
I also played the game on the following day and added a little twist. I gave the partners two number cubes with numbers higher than 4, and let them play for 10 min. Then I gave them 2 number cubes with numbers lower than 4, and let them play for 10 min. Then they got one high and one low and played for another 10 min.
As a follow up, we discussed what they found happened with each set of cubes. This has really helped my students know when to regroup and when not to!!
E-Mail Candace Hooks!
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