P – EC – RT8

When estimating a large number of people, Janie asked people to gather into groups of 10. What would Janie’s reasoning be for asking people to group? Could she have grouped them in other ways?

P – EC – RT9

Taylor and Sam estimated the number of people in line for hockey tickets. Both used referents of 20, but they had different estimates. How is this possible if they used the same referent?

P – EC – RT10

Terry and Reid estimated the number of people in line for concert tickets. Terry used a referents of 10 while Reid used a referent of 20. They estimated the same number of people. How is this possible if they used different...

P – EC – RT11

Jamie, Matty and Reid estimated how many balloons were at the party. Jamie used a referent of 10, Matty used a referent of 25 and Reid didn’t use a referent. All three of their estimates were very close. How could their estimates have been so close if they all...

P – COA – RT11

Two students created a bar graph for the same collected data. Their graphs did not look the same. Could both students be correct or does one have to be wrong?

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