Reflection: Developing a Conceptual Understanding Building a Meter: Comparing units. - Section 3: Informal assessement of understanding


I chose to introduce metric measurement using meters first because it was the easiest to develop their conceptual understanding that the metric system is based on ten. The meter is a number line and so this concept is visually easy to understand. From this point on, they can move forward in understanding that the other base units are based on this number line concept of ten. This is the first lesson in a series of three discovery lessons. Math Practice Standards 4 & 5 are practiced in this lesson clearly by them as they manipulate tools, read the meter stick or tape and then explain their model in their assessment video. We are also mastering the portion of the standard that expects that students have understanding of relativity to the units. They can see the size of the centimeter and decimeter ( a harder concept) through the cubes and rods. It is a really fun lesson to start them off solidly in understanding the metric system.

  Supporting understanding through guided discovery.
  Developing a Conceptual Understanding: Supporting understanding through guided discovery.
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Building a Meter: Comparing units.

Unit 2: Metric Measurement
Lesson 4 of 18

Objective: SWBAT show and explain the units within a meter (mm, cm, dm) and compare their relationship to each other.

Big Idea: In this "just too fun" lesson, place value blocks take on a new meaning as they are used to build a meter. Then, students create an assessment video explaining the relationship between mm, cm and dm to the meter.

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