Sunday, January 11, 2015

Learning our way around teen numbers

For our math workshop this week, we explored teen numbers.  Our kindergarteners are adept at counting, and many have shown their counting skills for their medallions already!  However, it is a critical piece of math competency to decompose numbers, as in recognizing that 10+1 is the same as 11, 10 and 5 is same as 15, etc.  With teen numbers, it also helps children work their way around place value and understand the abstract concept of tens and ones.

We used a ten frame similar to these ten frames to break down numbers 10-20.

We began teen number booklets, thinking in sets of five or "5 groups" to build and record numbers 10-20.

At another station, students practiced matching ten frames to teen numbers.

But our favorite station was number match!  One student covered their eyes, and their partner filled the ten frames to a number between 10 and 20.  Then their partner had to quickly identify how many and record it on the table.  It was definitely a lively game for all!


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