Lesson plan

# 6. Compare three-digit numbers with expanded form and base ten sketches (FP)

teaches Common Core State Standards CCSS.Math.Content.2.NBT.A.4 http://corestandards.org/Math/Content/2/NBT/A/4
teaches Common Core State Standards CCSS.Math.Practice.MP7 http://corestandards.org/Math/Practice/MP7

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Lesson objective: Compare three-digit numbers using the structure of the place value system.

This lesson helps to build fluency with comparing three-digit numbers. Sketches of base ten blocks and expanded form are used here because they support an understanding of the value of each digit in a three-digit number.

Students engage in Mathematical Practice 7 (Look for and make use of structure) as they use patterns in the place value system to compare numbers.

Key vocabulary:

• equal/equivalent
• expanded form
• greater
• less
• value

Special materials needed:

• base ten blocks
• place value mat (optional)