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Unit 8 - Lesson 5 - Grade 2: Illustrative Mathematics

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Grade 2 Unit 8
Lesson 5: Patterns with Even and Odd Numbers
CC BY 2021 Illustrative Mathematics
Grade 2 Unit 8
Lesson 5: Patterns with Even and Odd Numbers
CC BY 2021 Illustrative Mathematics
Lesson: Patterns with Even and Odd Numbers

How Many Do You See: Even or Odd (Warm Up)

How many do you see?

How do you see them?

What did you notice?

What do you wonder?

Presto Chango

In the first column of your recording sheet, decide whether each student has an even or odd number of counters. Show your reasoning and circle your choice.

Complete the gray column.

Does adding 1 change whether the number of counters is even or odd? Explain.

Complete the last column.

Does adding 2 change whether the number of counters is even or odd? Explain.

Cool Down: Odd One Out

Elena has 8 counters. Does she have an even or odd number of counters? Explain or show your reasoning.

Without adding, explain which one of these expressions represents an odd number.