Hershey Bar Fraction Review

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Objective

SWBAT add, subtract, multiply,and divide fractions.

Big Idea

Make a sweet deal with your students and review operations with fractions using Hershey Bars.

Lesson Author

Christa Lemily

Bowling Green, KY

Grade Level

Eighth grade

Subjects

Math

Fractions

Algebra

Standards

7.NS.A.1d

Apply properties of operations as strategies to add and subtract rational numbers.

7.NS.A.2

Apply and extend previous understandings of multiplication and division and of fractions to multiply and divide rational numbers.

MP1

Make sense of problems and persevere in solving them.

MP3

Construct viable arguments and critique the reasoning of others.

MP4

Model with mathematics.

MP5

Use appropriate tools strategically.

MP6

Attend to precision.

Bellringer - Setting Expectations

5 minutes

The lesson itself takes a while for students to complete because of level of difficulty, not length of questions (MP1). Since I know students need time to work and talk I would make the introduction short. Highlight the seventh grade standards that are being reviewed today:

7.NS.1 Apply and extend previous understandings of addition and subtraction to add and subtract rational numbers; represent addition and subtraction on a horizontal or vertical number line diagram.

7.NS.2 Apply and extend previous understandings of multiplication and division and of fractions to multiply and divide rational numbers.

Then, brainstorm what it means to be a rational number. Make it clear that today is about reviewing operations with fractions as we use fractions in equations.