Mississippi Math A-CED.1
The Standard
Create equations and inequalities in one variable and use them to solve problems. Include equations arising from linear and quadratic functions, and exponential functions. *
2025 Mississippi College- and Career-Readiness Standards for Mathematics · Create Equations that Describe Numbers or Relationships
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students turn a story into a math statement with one unknown. They solve it and check whether the answer makes sense for the story.
What Mastery Looks Like
- Given a $20 fee, $5 per visit, and a $60 limit, a student writes 20 + 5v ≤ 60 and finds a maximum of 8 visits. They can also find a rectangle’s width from its area and the time it takes a population to double.
Common Misconceptions
- Students read “at least” as ≤ or forget to reverse an inequality when dividing by a negative number. They model repeated doubling by adding a fixed amount, or accept a negative width from a quadratic equation.
How to Assess It
- Exit ticket: Write and solve a model for each story: a $12 fee plus $4 per visit with a $40 limit; a rectangle with sides x and x + 2 and area 48; and 5 bacteria doubling hourly until there are 40. Cross out any answer that does not fit the story.
Lesson moves
Ways to Teach It
Give pairs 20 counters, charge 3 as an entry fee and 2 per ride, then have them build the most rides and write 3 + 2r ≤ 20.
Ask students to explain why t = 0 and t = 6 both solve -t² + 6t = 0, but only t = 6 is a ball’s landing time.
Give pairs cards for a rectangle with sides x and x + 2, area 48, equation x(x + 2) = 48, and width 6; race to order them.
Use a 200 mg dose that halves every four hours; students write 200(0.5)^(t/4) = 25 and find t.
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Printable A-CED.1 Worksheet
A ready-to-print activity worksheet aligned to A-CED.1, with an answer key for the teacher on its own page. No account needed.
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Related Standards
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Solve linear equations and inequalities with rational number coefficients, including those whose solutions require expanding expressions using the distributive ...
- ATM.EE.26
Solve linear equations and inequalities with rational number coefficients, including those whose solutions require expanding expressions using the distributive ...
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