Modeling Integer Addition and Subtraction for 7th Grade
This practice set guides 7th graders through adding and subtracting integers using number lines and counter models, with worked examples and zero-pair reasoning that build conceptual understanding before procedural shortcuts. It is well suited to a 45-minute block or partner practice.
“adding and subtracting integers”
Teacher Guide & Tips
- Use this as a guided-practice lesson after a brief warm-up on positive and negative numbers, working through Part 1's number line example together before students try problems independently.
- Discussion question: why does adding a negative number move us to the left, and how does that compare to subtracting a positive number?
- Scaffold for struggling readers: have them physically count jumps on a number line or use paper counters to build zero pairs before writing the symbolic answer.
- Extension for advanced students: ask them to explain why subtracting a negative is equivalent to adding a positive, using the counter model to justify it.
- Estimated time: about 30 to 40 minutes for the full set, depending on how many problems you assign.
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Try Diffit for free“adding and subtracting integers”
Teacher Guide & Tips
- Use this as a guided-practice lesson after a brief warm-up on positive and negative numbers, working through Part 1's number line example together before students try problems independently.
- Discussion question: why does adding a negative number move us to the left, and how does that compare to subtracting a positive number?
- Scaffold for struggling readers: have them physically count jumps on a number line or use paper counters to build zero pairs before writing the symbolic answer.
- Extension for advanced students: ask them to explain why subtracting a negative is equivalent to adding a positive, using the counter model to justify it.
- Estimated time: about 30 to 40 minutes for the full set, depending on how many problems you assign.
Modeling Integer Addition and Subtraction for 7th Grade
This practice set guides 7th graders through adding and subtracting integers using number lines and counter models, with worked examples and zero-pair reasoning that build conceptual understanding before procedural shortcuts. It is well suited to a 45-minute block or partner practice.
What is Diffit?
Teachers use Diffit to get quality materials for their unique classrooms. Adjust difficulty, add scaffolds, or change the topic to get started.
Try Diffit for free