The last class period we went over different ways children can learn to do addition and subtraction. The first way that was discussed was left to right addition. To be honest I don’t think I have ever in my life done this way of addition. The book mentions that a lot of students understand to add from left to right because they are used to reading from left to right, and to switch addition on them from right to left often confuses them. I watched this video on left to right addition that helped me, It also shows a way that you can get the same answer by skipping around, and not adding the numbers in order! I thought that was pretty cool! Amy had mentioned that there are so many different ways to do attrition and that we won’t be learning them all, but it just amazes me that for 21 years I have old known how to add one way.
The second way we discussed is also in the video, it’s the last method that he does. Most people understand this form of addition because it is normally how we were taught to add in the younger grades, this said to be the traditional algorithm. Algorithm means a step by step process for computing. We also talked about partial sums. Partial sums are digits for each place value are added, and the partial sums are recorded before they are any regrouping. Here is another video that might help students learn.
Leanne,
ReplyDeleteI like you have only known one way to do math and that's right to left so I was very surprised when she showed us different ways to do addition. The videos you posted up are very helpful and it is interesting and neat how you can add going out of order and it still being correct. Thanks!
Thanks videos! Its a total different way of thinking through a problem. There are so many children that struggle with math, think these methods well be helpful for those students in our classrooms.
ReplyDeleteI like the different way that we can work out addition problems not just the standard way of dong it right to left
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