Numbers on a number line
Understand inequalities as statements comparing expressions, represent solutions on a number line, and solve simple linear inequalities using the same inverse-operation methods as equations
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“Can your child solve an inequality like 2x + 1 < 9, show the answer on a number line, and explain what all the solutions have in common?”
Full guide and materials
- Activity. Understand inequalities as statements comparing expressions, represent solutions on a number line, and solve simple linear inequalities using the same inverse-operation methods as equations
What to notice. Write an inequality from a worded constraint (e.g., 'must be at least 12' → x ≥ 12) • Represent the solution set of an inequality on a number line with open or closed circles • Solve a one-step or two-step inequality such as 3x + 1 < 10
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Can your child solve an inequality like 2x + 1 < 9, show the answer on a number line, and explain what all the solutions have in common?
Understand inequalities as statements comparing expressions, represent solutions on a number line, and solve simple linear inequalities using the same inverse-operation methods as equations
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Check understanding
- Write an inequality from a worded constraint (e.g., 'must be at least 12' → x ≥ 12)
- Represent the solution set of an inequality on a number line with open or closed circles
- Solve a one-step or two-step inequality such as 3x + 1 < 10
“Can your child solve an inequality like 2x + 1 < 9, show the answer on a number line, and explain what all the solutions have in common?”
Curriculum record
- Type
- Representational
- Subject
- Mathematics
- Domain
- Algebra
- Age range
- Ages 11–14
Standards