P – EC – WP1

There were boxes of crayons covering the top of Charlie’s desk. The boxes of crayons were side-by-side, and none were on top of each other. The teacher asked Charlie to estimate the number of boxes on the top of the desk. Charlie said 50. Would you agree with Charlie?...

P – EC – WP2

There were boxes of crayons covering the top of Desi’s desk. The boxes of crayons were side-by-side, and none were on top of each other. The teacher asked Desi if he thought there would be closer to 100 or 1000 boxes of crayons on the top of the desk. Which estimate...

P – EC – WP3

A baker was looking at different containers to hold newly baked cookies. About how many cookies can be held in this cookie jar?

P – EC – WP4

A baker was looking at different containers to hold newly baked cookies. If you had to estimate as to how many cookies could fit in this cookie jar, what size would your referent be?

P – EC – WP5

The school science club was interested in watching the different kinds of birds flying over the playground. What size of referent would you use if you were asked to estimate the total number of birds flying in the picture...

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