Today I read the first part of the book *Measuring Penny* by Loreen Leedy. In the story, a girl gets a homework assignment to choose something to measure in as many different ways as she can. The homework "assignment" includes using different types of units, remembering to record measurements with a number and a unit and to include a comparison. I gave the students this assignment in class today and they could choose whatever they wanted (other than their bean plants which we had just measured). Students measured the door, frisbees, pencils, books, my laptop, their stuffed animals, me and each other.

While the students were VERY engaged measuring away, I was able to walk around and talk to them about their measuring and do some real performance-based assessment of both their measurement skills and their broader understanding of measurement.

This task also included lots of oral language opportunities as students compared the sizes of different objects (or each other) and I modeled math language like perimeter, circumference and millimetres to some students.

The students focused mostly on linear measurement and I was glad to see a few students measure the perimeter of items (books, my laptop). One student measured around the edge of a frisbee so I introduced the term circumference to her.

I did notice a few students weren't sure how to measure something longer than a ruler when they didn't have access to a measuring tape or metre stick. I think I'll have some of the other students demo how to measure longer items. I have seen students use two types of iteration with the rulers: students lining up multiple rulers and count by 30s (centimetres) to get to their total and using one ruler, marking the end and sliding it and keeping track of how many "rulers long" they have measured.