Wednesday, September 12, 2012

Common Core: How many ways can you make 10?

We  have been working on addition to sums of ten in first grade.  Today we had to find all the ways to make ten.  I started by having the kids use a ziploc bag.  I divided the bag in half using some fun duct tape.

In each bag I placed 10 counters.  You can really do this with any sum, but since our lesson was making sums of 10 that's what I used.  The students would start by having 0 on the left side and 10 on the right.  So 0 + 10=10.  Next I had them move one counter to the other side, they would write the addition sentence 1 + 9=10, then they moved another counter 2+8=10, and so on.  It was fun to see them realize the pattern you get when you move them.  Having this hands on visual helped my kiddos a lot.



I created this little paper to use as a pre-teaching lesson before having them do the activity page out of our math series.  By preteaching the lesson with this paper helped them to do the activity page more independently.  I have included this activity page as a FREEBIE to use in your classroom. 
Just click the image below.  The students draw the counters in the "ziploc" bag and then record the addition sentence.  Enjoy!!

7 comments:

  1. Replies
    1. Thank you so much Donna, I can't wait to have this featured on your blog!!

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  2. Love this idea! I'm always on the search for great ways to teach math concepts. Thanks! I'm a new follower:)
    Sarah
    Sarah's First Grade Snippets

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  3. Hi, I found your blog and this idea through The First Grade Parade. This would fit well with out Math in Focus Curriculum. Thanks for sharing it.

    Becky
    Compassionate Teacher
    http://compassionate-teacher.blogspot.com/

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  4. This is good but should be open to decomposing 10 into more than 2 parts, this would give high students more ways to think about the quantity of ten.Challenge: how may ways can you make 10? (open-ended: ex: 2+2+3+1+2)

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