I really liked the cauldron activity. What a great activity to help demonstrate the addition and subtraction of integers. For example, -7 - 5 is n -7 subtract +5. Doing this problem using the cauldron can help me demonstrate what this means. It also helps demonstrate "zero pairs". So when I have -7 (which is the yellow pieces in my cauldron) I can't take out 5 positives (the green pieces) so that is why I add my zero pairs and I can now take out 5 positives and when I take those out, I am left with the answer. My question about this is, when do teachers teach about adding and subtracting integers. As they are teaching addition and subtraction? I guess, since I am not in the classroom, I can't picture when I would do this type of activity.
Ahhhh....teaching addition and subtraction of integers using the number bond. I totally get the addition of integers, but for some reason I struggle with the subtraction of integers. The more I worked with the problems, I was starting to get it. I was never taught to look at addition and subtraction problems as part part whole. This class is challenging me to remember that, but this is good for me.
No comments:
Post a Comment