This morning the children provided ideas on the board for how we could measure around the school. After discussing this, it was decided to use a person as the unit of measure - ME! So the students worked in groups to trace me on paper and cut it out. We then estimated how many it would take (using the referent of the length of the hall in bodies that was measured by a group last week).
It took much longer than anticipated, and the total came to 101! It was so great to see the entire class working together towards their goal. We had many estimates close to the actual measurement as well.
Big Math Ideas for Measurement
(Carole Fullerton)
• When we measure, we compare.
• There are many attributes of an object that can be measured:
-length, mass, capacity, distance around, surface area (how much to cover).
• We can use any object to measure with, provided they are all the same size.
• The size of the object we use affects how many we need!
• If we only have a single copy of an object to measure with, we can use it over and over, making a baseline each time.
• Mathematicians estimate when they measure.
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