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Wednesday, January 20, 2016

Two-Digit Addition and Place Value

In math last week, we introduced the concept of two-digit addition. We did this by using our base-10 blocks. We created silly stories about animals and how much they would weigh together. Then we represented the weight of each animals with base-10 blocks and added the blocks together. We did not focus on the regular math notation for this yet but. We are working on building a deep understanding of place value and how addition works and then we will learn how to write it in symbols (25 + 36 = 61) at a later time. (I did write some problems using that notation so some children may begin using the symbols now. It just depends on how ready they are for that step.) Check out the pictures below for some examples.

This is a way that you can draw the blocks to use this system at home.

Homework ~ Read a good book or two. Check out a Bedtime Math story.

Our volunteer today is Ms. Ellen. Ms. Ellen comes in on Friday afternoons and helps us with our writing. She is also willing to jump in on other special projects, too. The photo below shows her assembling some of our new stools and chairs. She is a jack of all trades - and keeps Wendy and I nicely supplied with fresh eggs.

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