##
* *Reflection: Checks for Understanding
Algebraic Expressions Quiz - Section 2: Administering the Quiz

The majority of my students finished the quiz in 15 minutes, with time to check their work and attempt the challenge problem. The most common mistakes that students made were:

1) When translating the algebraic expression, students didn't apply the operation of "less than" correctly. They needed to subtract 2 from 3x.

2) Students confused the coefficient with the constant when completing the chart.

3) For problem 4, students didn't simplify the expression completely. For example, they didn't subtract *a* from 7*a* and included *a* as a separate term. Students forgot that *a* has a coefficient of 1, which I sometimes referred to as the "invisible 1".

4) For the challenge problems, students were able to provide one method for finding the perimeter, but didn't remember how to apply the formula for perimeter, P=2L+2W, using algebraic expressions.

In the future when preparing students for this quiz, I think it will be helpful to provide them practice with identifying and correcting these type of mistakes.

*Taking the Quiz*

*Checks for Understanding: Taking the Quiz*

# Algebraic Expressions Quiz

Lesson 9 of 16

## Objective: SWBAT show their understanding of algebraic expressions.

*35 minutes*

#### Quiz Topics

*5 min*

For this quiz students will be assessed on the following topics:

- Translating algebraic expressions

- Evaluating algebraic expressions

- Simplifying algebraic expressions

- Identifying parts of an algebraic expression

*expand content*

#### Administering the Quiz

*30 min*

Students will be given 20 to 30 minutes to complete the Algebraic Expressions Quiz. They will not be allowed to use their notes or discuss their work with another student.

If students should finish early I will encourage them to check their work. I will give them a challenge problem for extra credit. The challenge was discussed in a previous lesson, but students may not remember that there are two strategies for finding perimeter.

**Challenge**

Show two strategies for finding the perimeter of a rectangle with a length of 3x + 4 and a width of 2x + 5.

#### Resources

*expand content*

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- UNIT 1: First Week of School
- UNIT 2: Properties of Math
- UNIT 3: Divisibility Rules
- UNIT 4: Factors and Multiples
- UNIT 5: Introduction to Fractions
- UNIT 6: Adding and Subtracting Fractions
- UNIT 7: Multiplying and Dividing Fractions
- UNIT 8: Algorithms and Decimal Operations
- UNIT 9: Multi-Unit Summative Assessments
- UNIT 10: Rational Numbers
- UNIT 11: Equivalent Ratios
- UNIT 12: Unit Rate
- UNIT 13: Fractions, Decimals, and Percents
- UNIT 14: Algebra
- UNIT 15: Geometry

- LESSON 1: Exponents
- LESSON 2: Order of Operations
- LESSON 3: Identifying Algebraic Expressions
- LESSON 4: Translating Expressions
- LESSON 5: Evaluating Algebraic Expressions
- LESSON 6: Applying the Distributive Property to Algebraic Expressions
- LESSON 7: Combining Like Terms
- LESSON 8: Combining Like Terms with the Distributive Property
- LESSON 9: Algebraic Expressions Quiz
- LESSON 10: Solving 1 Step Algebraic Equations
- LESSON 11: Solving 2 Step Algebraic Equations
- LESSON 12: Writing Algebraic Inequalities
- LESSON 13: Graphing Inequalities on a Number Line
- LESSON 14: Using Inequalities to Solve Problems
- LESSON 15: Algebra Review Stations
- LESSON 16: Algebra Unit Exam