Lesson plan

# 10. Apply place value understanding to compare two-digit numbers (A)

teaches Common Core State Standards MP7 http://corestandards.org/Math/Practice/MP7
teaches Common Core State Standards MP2 http://corestandards.org/Math/Practice/MP2
teaches Common Core State Standards 1.NBT.B.3 http://corestandards.org/Math/Content/1/NBT/B/3
teaches Common Core State Standards 1.NBT.B.2 http://corestandards.org/Math/Content/1/NBT/B/2

# 10. Apply place value understanding to compare two-digit numbers (A)

Lesson objective: Apply knowledge of place-value while comparing two-digit numbers.

This lesson provides an opportunity for students to apply their knowledge and understanding of place-value to a mathematical situation. Students are asked to play a game wherein they figure out a mystery number through the use of comparison.

Key Concept students will use:

• Understanding the structure of the place value system allows us to determine whether one number within 99 is greater than, less than, or equal to another number.

Skills students will use:

• Knowledge of place-value.
• Knowledge of comparison (Grade K, Unit 14).

Students engage in Mathematical Practice 2 (students make sense of the relationship between the numericals and the quantities; students will notice the pattern in the numericals as the quantities those numbers represent change) as they compare two-digit numbers to discover their partner's mystery number.

Key vocabulary:

• between
• equal to
• greater than
• less than

Special materials needed:

• game cards
• base ten blocks