Estimate Jar

Friday, we learned about estimating the number of objects that were in our Estimate Jar. Each student wrote down their estimate on their whiteboard. 

We discussed our rules for counting objects (one item at a time with one to one correspondence). We decided to be accurate, we would count each and every candy to remember those tricky teen numbers! We made up a new number for those teens and called them teny one (11), teny two (12), teny three (13) so it followed the pattern of the rest of the number families where the tens were announced and then the ones. That's why the teen numbers are so tricky because you say the ones first or have unique ones like 11 and 12!  

However, we did find that counting by twos would be faster! So we grouped our treats in twos to see about skipping every other number. We got the same number....only faster!

Then for the big moment!! We all took a turn going around the class and sharing our estimate. We compared numbers and how far away our estimate was from the actual total we had of candies. 

Leah was our lucky winner! She had the closest guess that was only two away from the actual number! She was super kind to share the candies with everyone in class today. Leah then got to take home the leftovers! Score!

Students are really excited to see what is going to fill our estimate jar next for October!