P – EC – OE17

About how many counters can you pick up in ten handfuls?

P – EC – ID5

Lots of the students in our school use recyclable containers in their lunch. We are thinking of having a recycling drive, but are curious how many items we would have collected by the end of the year.

P – EC – RT1

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. When would be an appropriate time to use either referent? Explain your...

P – EC – ID6

Our school has lots of events throughout the year. As a way to monitor community invovlement, the school is looking for way to see approximatley how many people attend.

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...

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