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What are Integers?

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Lesson Details

Grade Level
6-8
Duration (minutes)
1
Summary
A quick visual lesson defining integers as whole numbers — positive, negative, or zero — using a number line to sort examples (4, -3, 0) from a non-example (2.5).

Number line infographic showing 4, -3, and 0 as integers, with 2.5 crossed out as a non-example

Student Worksheet: What Are Integers?

Teacher Note: Students can watch the video lesson above and answer the questions. Click the “Teacher Answer Key” dropdown below when you are ready to review the solutions!

Key Concepts:

• Integer: A whole number that can be positive, negative, or zero — never a fraction or decimal.

• Number Line: A visual tool where positive integers sit to the right of zero and negative integers sit to the left.

Instructions: Read each question carefully and write your answer in the space provided.

  1. Question 1: What are the three types of numbers that count as integers?
  2. Question 2: Is 4 an integer? Explain why or why not.
  3. Question 3: Is -3 an integer? Explain why or why not.
  4. Question 4: Is 0 an integer? Explain why or why not.
  5. Question 5: Is 2.5 an integer? Explain why or why not.
  6. Question 6: Give your own example of an integer and an example of a number that is NOT an integer.
Click to reveal Teacher Answer Key

1. Positive whole numbers, negative whole numbers, and zero.

2. Yes — 4 is a whole number with no decimal or fraction part.

3. Yes — -3 is a whole number; integers include negative numbers.

4. Yes — 0 is a whole number and counts as an integer.

5. No — 2.5 has a decimal part, so it is not a whole number.

6. Answers will vary; check that the integer example is a whole number and the non-example has a decimal or fraction.

Disclaimer: This worksheet was generated with AI assistance based on original video content. It is intended for educational reference only. Teachers are encouraged to review and adjust questions to fit their curriculum standards before classroom use.

🎯 Extension Activity: Give students a set of 8 numbers (e.g., 6, -1.5, -9, 3/4, 0, 15, -22, 7.2) and have them sort each into "Integer" or "Not an Integer" columns, explaining their reasoning for one tricky case.

📚 Part of a 5-Day Series: Integers Week

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