P – EC – WP10

A student had drawn dots all over his scribbler page. What would you use as a referent for the following picture? Explain your thinking.

P – EC – WP11

Students were asked to estimate how many cars were in the parking lot. Sammy said her estimate was 50. She used 5 as a referent, and skip counted by five 10 times. Sammy said there were about five cars in each row and there were about 10 rows. Is Sammy’s...

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?

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