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ncs-NSDL-COLLECTION-000-003-112-016
This lesson introduces students to the concept of ratio through a hands-on, delicious experiment. After an introductory activity where students identify the ratio of girls to boys in a group of 10 selected students, they create six different peanut butter and jelly sandwiches with different ingredient ratios to find which is the tastiest. Students then plan their own similar experiment using other concoctions which can be expressed in ratios.

Summary

Subject keyword(s) Arithmetic, Number and operations, Ratio and proportion
Grade level Middle School, Informal Education, Vocational/Professional Development Education
Intended audience Educator, Learner
Resource type Instructional Material
Resource format text, text/html

Using this resource

Educational standard
  • Common Core State Standards for Mathematics
    • Math > grades 6
      • 6.RP.1: 1. Understand the concept of a ratio and use ratio language to describe a ratio relationship between two quantities.
        Comments: For example, "The ratio of wings to beaks in the bird house at the zoo was 2:1, because for every 2 wings there was 1 beak." "For every vote candidate A received, candidate C received nearly three votes."
      • 6.RP.2: 2. Understand the concept of a unit rate a/b associated with a ratio a:b with b ? 0, and use rate language in the context of a ratio relationship.
        Comments: For example, "This recipe has a ratio of 3 cups of flour to 4 cups of sugar, so there is 3/4 cup of flour for each cup of sugar." "We paid $75 for 15 hamburgers, which is a rate of $5 per hamburger.". Expectations for unit rates in this grade are limited to non-complex fractions.

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Math Comm Core

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