Reflection: Checks for Understanding Introduce 100 Board - Section 1: Problem of the Day


These closing questions are quite important. Identifying numbers as quantities, and being able to compare them (basically) with others is a fundamental outcome in kindergarten. I deliberately don't go outside of thirty, because I truly want to see if my kids - all of my kids - are coming to an understanding of the base ten structure. 

There's a lot of complexity in these questions, because the thinking involves more than words and symbols. Students need to be be able to recognize these numbers by name (vocabulary) with meaning. They also need to have made a fairly sophisticated step, transitioning from one-to-one correspondence to the understanding that we also represent "bundles" of ten, as individual groupings. Without this understanding, the patterns of the base 10 system don't make any sense. This is a really quite a big step, and it requires lots and lots of practice.

One of the ways to help students include checking on number word before, number word after. This is a simple check that can be practiced in those little parts of the day when students transition. Also, checking on what is more, and what is less is also a quick task - it could be a line up activity. It is checking on a different understanding. Students may develop strong rote memories, and be able to produce the number word before, or the number word after (although they usually give themselves away because they have to think/vocalize counting up from one to "find" that number) but in order to know which one is more than the other also means they've attached quantity to the numeral. And both of these understandings are easily differentiated for students, depending on the number span.

  Number Before and Number After
  Checks for Understanding: Number Before and Number After
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Introduce 100 Board

Unit 9: Numbers to 100
Lesson 5 of 8

Objective: Students will be able to find numbers on a 100 Chart.

Big Idea: Numbers don't stop at 20! We spend the last week or so of school looking at the numbers beyond 20. Today we do it through exploring a 100 Chart.

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