Lesson plan

Compose 3-digit numbers by using base ten blocks

teaches Common Core State Standards CCSS.Math.Content.2.NBT.A.1 http://corestandards.org/Math/Content/2/NBT/A/1
teaches Common Core State Standards CCSS.Math.Practice.MP3 http://corestandards.org/Math/Practice/MP3

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Big Ideas: 3-digit numbers can be constructed using different combinations of ones, tens, and hundreds. In this lesson students use base ten blocks to "build" a robot and then use what they know about hundreds, tens, and ones to determine the value of their creation. Students are able to access the material at their level, making their robot as simple or complex as they can. After creating their robots students can engage in discussion about how to make an "expensive" robot or a "cheap" robot, which prompts students to think about the value of their "robot parts" (i.e. "would 8 hundreds or 8 ones give me a robot that's worth more?"). This type of work lays the foundation for working with expanded form and decomposing numbers. Vocabulary: base ten blocks Special Materials: Base ten blocks