Aug 10 2012
The Estimation Jar
On Wednesday, one of our friends noticed there was a clear plastic jar sitting on top of the block area. They were very intrigued and wanted to know what the objects were inside! We talked about how this jar is the Estimation Jar and it will be used each week to practice our estimation skills. This week, I placed wooden wheels inside the jar. The kids were encouraged not to open the jar and count, rather guess how many are inside. Messi shared with the class a wonderful explanation of estimation:Estimation is figuring out how many without counting. After our discussion and Messi’s explanation, friends were encouraged to write their name and estimation on a card and pin it up to the wall. We have been anxiously watching more and more guesses pop up! Today at the end of the day, we sat down and talked about each estimation. We will practice making reasonable estimations and learning when some are not so reasonable. After we talked, we counted. What did we find? We discovered that there were 45 wheels in the jar- really close to Beatrice’s estimation of 49! Very exciting! The kids are excited to see what inside the jar next week.
The estimation jar. Can you tell how many wheels are inside?
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