Explore the strong connection between mathematics and science. Learners see how to use proportions to determine the makeup of chemical compounds. The example shown finds the number of grams of oxygen in a given amount of water.

Concepts

equivalent ratios, ratios, proportional reasoning, proportions, chemical compounds

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Additional Tags

math

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Instructional Ideas

• Consult a science teacher to create an interdisciplinary lesson
• Make a connection to the periodic table as you work through the problems

Classroom Considerations

• Learners should be proficient with writing and solving proportions

• This video is hosted on YouTube

Pros

• Solves the proportion using the Multiplication Property of Equality rather than cross multiplication

Cons

• Does not explain the chemistry concepts related to the numbers used and mathematics shown

Common Core

7.RP.A.3