Embedded Files
Standard
Standard
Determine whether a group of objects (up to 20) has an odd or even number of members, e.g., by pairing objects or counting them by 2s; write an equation to express an even number as a sum of two equal addends.
Student language:
- "I can group objects to tell if a number is odd or even."
Explanation
Explanation
About the Math, Learning Targets, and Rigor
This standard calls for students to apply their work with double addition facts to the concept of odd or even numbers. Students should explore this concept with concrete objects (e.g., counters, place value cubes, etc.) before moving towards pictorial representations such as circles or arrays.
Common Misconception
Students will look at the number of digits to determine if the number is odd or even instead of the quantity itself. Example: 53 is an even number because it has 2 digits. This is a misconception. Students will determine whether a number is odd or even by the first digit in the number instead of the digit in the ones place.
Resources
Resources
Videos
Videos
- Instructional Video (9:22 - 12:16)
- Khan Academy
- scroll to find 2.OA.3, click on a skill, watch videos on left side in each skill
- Learn Zillion
EngageNY Lessons
EngageNY Lessons
Extra Practice
Extra Practice
- North Carolina Tasks
- Illustrative Math Tasks
- Howard County Tasks
- Click on 2nd grade at bottom, then 2.OA.3
- Common Core Sheets
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