Thursday, 4 December 2014

Estimation : How many marbles are there?

How many marbles are there?

 

The answer is in the video ...

video

5 comments:

  1. Big is 70 , Small is 20 , My estimate is 40.

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  2. I think 20 is small and 90 is too big and my estimate is 70.

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  3. I think that 10 is to small and 50 is to big my estimate is15

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  4. This looks tricky as there are different sizes. Hmmmm... I think 20 is too small and 40 is too big. Now to check out your video.

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