P – EC – OE11

What would you use as a referent if you had to estimate the number of students in a classroom you are visiting?

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 – OE12

What would you use as a referent if you had to estimate the number of students on a bus?

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...

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