![]() I also added this activity to practice adding integers. I also used the Desmos activity for subtracting integers, and thought it went well and plan on using it again in the future. I overheard one student say, “I guess I am a hands on learner.” so I knew it was beneficial to take the time for these things. Some students really benefited from this. I need to remember to make more time for this in the future. ( Update 10/18: This year when I taught this, I spent a lot more time with the integer mats and got out the counting chips on multiple days and let students pick on other days whether or not they wanted to use them. What I really like about these activities is that students practice noticing patterns, generalizing patterns, and applying those ideas to new problems -something we talk a lot about the first few days of school, and integers are the first unit with my seventh graders. I did create one for multiplication and division based off of this activity that I used. ![]() Last year, I saw this Desmos activity, and loved it, but I didn’t use it for whatever reason. It seemed like every time we were going to use the colored counters, something else that day took longer, and I didn’t take the time to get them out. This year, we focused more on number line rather than using the colored counters, and I’m not sure why, other than time. ![]() I’ve used Sarah’s “Sea of Zeros” and a number line to represent what is happening. I’ve tried a couple different ways of introducing students to adding and subtracting integers. I definitely have room for improvement when it comes to teaching integer stuff, but then again, when isn’t there room for improvement when it comes to this job? Below is a snapshot into our unit on integer operations. Up until a couple years ago, I had never been the one to introduce students to integer operations.
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