Wednesday, June 12, 2013

Explaining Subtraction Strategies

Subtraction Strategies from Kieren Moriarty on Vimeo.

Yesterday in Maths, I used the iPad app Explain Everything as we were going through some subtraction strategies. It is a great app and this was my first go - I can see immediately it could be used in much more wonderful ways than I have here. In our class, we can also use AirPlay and put what is happening on the iPad onto our class widescreen. It's great how you can pause and play back learning and this app suits it very much.

Anyway, hopefully there is something in the captured video that you can play back to help you understand and use subtraction strategies. Thank you to Inderpreet and Tyrone for their contributions on the last slide!


  1. Wow Mr M!
    Great post.
    It really shows how to solve and explain subtraction strategies!
    Everyone in room 16 is understanding and improving their skills to.
    Well done, Great post:-)

  2. Great video Mr M!
    This is a great example of P.V (Place Value).
    It really helps us to solve hard questions,
    awesome post Mr M!

  3. Awesome post Mr Moriarty!
    All of those strategies are well explained.
    The app Explain Everything sounds very good.
    Well done:-)

  4. I am so glad you made this post. It showed me how to do equal addition/same both sides. All of the strategies are shown clearly. Great work Mr. M

  5. I like this maths video. And I like the start because there was 63-27 I liked that part. From Caitlyn.