Money Math · Lesson Plan
Writing and Evaluating Money Expressions
A follow-on lesson that extends writing money expressions to include different money amounts and then evaluating them. Students practice both writing an expression for a situation and finding its value for given amounts.
For Teachers
Lesson at a glance
- Topic
- Money Math
- Grade Level
- Grades 6–9
- Resource Type
- Lesson + Worksheet
- Estimated Time
- 30–45 minutes
- Format
- Reading + practice worksheet
- Materials
- Printable lesson, worksheet, calculators
What Students Learn
Learning objectives
- Review writing mathematical expressions
- Review evaluating expressions
- Write expressions that include different money amounts
- Evaluate those expressions for given values
- Interpret what an evaluated result means in context
Materials
What you’ll need
- Printed copies of the lesson and worksheet (one per student)
- Whiteboard or projector for worked examples
- Pencils
Key Terms
Vocabulary
- Expression
- A math phrase with numbers, operations, and sometimes variables.
- Variable
- A letter standing for an unknown number.
- Coefficient
- A number multiplied by a variable, as the 12 in 12y.
- Evaluate
- Find the value of an expression for given values.
- Substitute
- Replace a variable with a number.
- Operation
- Addition, subtraction, multiplication, or division.
For Teachers
Lesson plan
Estimated time: one 30–45 minute class period.
Lesson sequence
- Warm-up (5 min). Review writing a simple expression like 12y for a money situation.
- Read the method (10 min). Students read how to write expressions with different money amounts and evaluate them.
- Worked example (10 min). Write an expression for a scenario, then substitute values and evaluate.
- Worksheet (12 min). Students practice; the answer key is included for teacher use.
Assessment
Assess the worked example and worksheet practice.
Discussion
Discussion questions
- How do you write an expression that uses different money amounts?
- What does it mean to substitute a value into an expression?
- How do you evaluate an expression once you have values?
- How is a coefficient (like the 12 in 12y) used in a money expression?
- What does an evaluated result tell you in a real situation?
Printable Lesson & Worksheet
Writing and Evaluating Money Expressions — Lesson & Worksheet
Printable lesson plus practice problems, with an answer key for teacher use.
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