E – I – RT9

The student said he placed six integers on an open number line. He provided the following hints about his number line: there are the same number of positive and negative integers, a few of the negative integers are close to zero and all of the positive integers are...

E – I – RT10

The teacher said she placed five integers on an open number line. She will not show you her drawing, but she did share that there are more negative integers than positive integers, that three of the integers are close together and that the remaining two integers are...

E – I – RT11

A teacher asked students to make a number line that has six integers, both positive and negative, place on it. As a challenge, the teacher asked students to place the same six integers on another number line that has a much different...

E – I – ID1

The community is preparing to have outdoor events for its youth. To be well informed, the community would like to have a record of the change in temperature over the past few weeks. They are asking if we could share this data in a way that highlights the changes in...

E – I – ID2

The population of our primary and elementary classes have been changing over the past few years. Our school administration is asking us to share how the population of these two grade divisions have changed from year- to-year over the past number of years. This...

Subscribe To Our Newsletter

Join our mailing list to receive the latest news and updates from Dr. David Costello.

You have successfully subscribed!