Lesson plan

# 4. Use a card game to write numbers in standard form, expanded form, and word form (A)

teaches Common Core State Standards CCSS.Math.Content.2.NBT.A.3 http://corestandards.org/Math/Content/2/NBT/A/3
teaches Common Core State Standards CCSS.Math.Practice.MP7 http://corestandards.org/Math/Practice/MP7

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Lesson objective: Apply knowledge of ways to name numbers.

This lesson provides an opportunity for students to apply their knowledge and understanding of naming numbers to a mathematical situation. Students are asked to help the teacher complete her set of game cards by coming up with equivalent names for numbers.

Key Concept students will use:

• Representing a whole number in different ways (including base ten numerals, number-names, and expanded form) does not change its value.

Skills students will use:

• Understand that the three digits of a three-digit number represent the amount of hundreds, tens, and ones (Grade 2, Unit 6)
• Write three-digit numbers in expanded form
• Write three-digit numbers in word form
• Write three-digit numbers in standard form

Students engage in Mathematical Practice 7 (Look for and make use of structure) as they look for patterns in the way we name numbers to name numbers they have not seen before.

Key vocabulary:

• expanded form
• standard form
• value
• word form

Special materials needed:

• base ten blocks
• place value mat (optional)