Reflection: Staircase of Complexity Using Different Units to Measure Day 1 - Section 3: Measuring with Craft Sticks, Playing Cards, and Index Cards


As the students were working, I would go to each team individually and ask them if there is a way to measure a floor strip with only three craft sticks.  Most would first say, "no."  However, I would ask them to try it and many would come up with a way of making it work.  The video demonstrates the solution that the teams came up with.  

It is important to encourage students to think about how they can measure a distance by iterating a single unit or by laying out the units, counting them, and moving them along the length of the tape.

The CCSS expect younger students to rely on using concrete objects or pictures to help conceptualize and solve a problem. Mathematically proficient students check their answers to problems using a different method, and they continually ask themselves, “Does this make sense?” They can understand the approaches of others to solving complex problems and identify correspondences between different approaches (CCSS.Math.Practice.MP1).

  Staircase of Complexity: Measuring With Only 3 Units
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Using Different Units to Measure Day 1

Unit 8: Non Standard Measuring
Lesson 6 of 8

Objective: SWBAT use accurate measuring techniques. SWBAT measure lengths using different size units.

Big Idea: Today students will focus on the idea that measuring an object using different length units will result in different measurements.

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measuring with sticks
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