Prime and Composite Numbers

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Objective

I can sort numbers into prime and composite groups.

Part 1 of 3

Warm-up video

Unknown Channel · 5:00

We don't generate video — this one is by Unknown Channel on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.

Part 2 of 3

Practice

7 questions

1

Explain, in your own words, what a prime number is. Give an example of a prime number and explain why it is prime.

2

Explain, in your own words, what a composite number is. Give an example of a composite number and explain why it is composite.

Part 3 of 3

Exit ticket

Quick comprehension check

Sort the following numbers into prime and composite groups: 14, 17, 21, 23, 25. Sort the following numbers into prime and composite groups: 11, 12, 15, 19, 22.

Sample answer included in the free materials

Get the materials

Teacher guide, student handout, and slides — free, in Google Docs format

  • Teacher Guide

    Complete lesson plan with answer keys and alternate activities

  • Student Handout

    Printable worksheet

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