Second grade is working on adding and subtracting with in 1000. We have been discussing different strategies to solve problems. More importantly, we have been explaining our mathematical thinking. I love to hear how they are thinking and solving problems.
This is such an important standard because we use it everyday! We have spent a good amount of time on this concept because it is foundational. In class, we worked on three important addition strategies specifically; bracketing, open number line, and the traditional regrouping (carrying) method. Each of the students made a video to "teach" the strategies. All the videos are delightful, it was hard to just choose one to share! Here a student explains bracketing. You can check out your own child's post on SeeSaw.
The students know the strategies, so now we just need to practice, practice, practice. For addition we have been playing different games that involve adding double digit and triple digit numbers.Here is a great game that would be really easy to play at home. The students love playing it at school. All you need is a deck of cards and some scratch paper.
Double digit subtraction has been a little more difficult for the students to master. We have worked with the strategies, we just need more practice to solidify the ideas. We have been practicing with games, iPad apps, manipulatives, and paper pencil.
Here is another game easy to play at home. You will need scratch paper, dice, and subtraction strategies. Give it a go!
We also made videos on SeeSaw to explain subtraction strategies. Here is just a sample.
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