P – EC – RT2

A group of students were learning about using referents when estimating. Some of these students argued that referents should be 10 while others argued that referents should be 100. Are there times when a referent of 10 and a referent of 100 would be helpful? Explain...

P – EC – RT3

You and a friend are asked to estimate the number of attendees at your school’s graduation ceremony. If you were to estimate such a large crowd, how large would your referent be and how would you use it to estimate the number of...

P – EC – OE5

You have to estimate a quantity consisting of a smaller number of items. What quantity would you like the referent to represent?

P – EC – OE6

You have to estimate a quantity consisting of a large number of items. What quantity would you like the referent to represent?

P – EC – OE7

Your estimate for a quantity is a small 2-digit number. What could you be estimating?

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