E – M – RT7

Julio told his teacher that there are four possible arrays for an area of 36 cm². Is the student correct? How do you know?

E – I – ID6

Some students use the school bus to go to and from school, while others walk or bike. There are fluctuations from day-to-day. How can we monitor these fluctuations without using larger numbers.

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...

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