When I was in grade school my teachers taught me how to carry and borrow numbers while adding and subtracting. I think the technical term is regrouping...but we just called it carry and borrow. Last summer I started teaching this to Alexis because I wanted to challenge her to do problems involving more than single digits. Alexis picked it up quickly but sometimes gets confused on which number to carry.
Last weekend I found a new math strategy called Front End Addition. That is where you do a math problem from left to right just like reading. I showed the strategy to Alexis and no kidding...she picked it up in about 2 minutes. She was able to add hundreds and we are going to try thousands soon.
This strategy is supposed to give kids a better understanding of place value. This strategy is also being used to teach mental math. I've tried it and it is so much easier to do a problem mentally using this technique. There is a really great video of a K/1 high ability class using this method on the Indiana Association of the Gifted facebook page, I highly recommend you check it out. This video also shows how to use this same technique with subtraction.
Alexis's class hasn't done any regrouping, as far as I know, so I'm unsure of what technique they'll use. Are they teaching this technique in your school?
End of Year Science
7 hours ago