This week we tackled 2.NBT.9. The excellent standard for having students explain their thinking. As always, as we explicitly teach the skill the first week, we place the skill in our stations for the following week. One of those stations is math games. We needed a great game for our kids to play that would allow them to apply this skill in game form. There aren't tons of resources out there for this skill. And to be honest it is a tricky skill not only to learn for our kids but to teach for us. We took the approach of having the kids not only explaining their thinking with both word problems and equations. But we also had students analyze other people's strategies for solving problems. We had them to analyze and decide why their strategies worked and explain why they didn't work.
I came up with a little game that allows the students to solve problems and choose multiple choice style the correct answer. Then they have a recording sheet that allows them to explain why the answer they chose was the correct answer. Be sure to check it out! First comment gets a free copy of your own!