Students calculate real ratios that exist between the planets Earth and Mars. After a lecture/demo, students use worksheets and access Internet sites to do their calculations.

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Grades:

7th - 9th

Students examine ratios, including the Golden Ratio, a ratio of length to width that can be found in art, architecture, and nature. They examine different ratios to determine whether the Golden Ratio can be found in the human body.

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Grades:

9th - 12th

Students analyze the formation of ratios as they develop comparisons of two known quantities. These comparisons are used to formulate proportions and solve problems.

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Grades:

7th - 10th

Students develop knowledge of what ratios and proportions are and how to use them. They practice setting up basic ratios. Students apply ratios and proportions to practical situations.

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Grades:

4th - 6th

Students comprehend that ratios and fractions are interchangeable. They compare ratios using common denominators, cross multiplication, and intuition. Students find equivalent fractions. They comprehend that equivalent ratios do not equate to equivalent mass. Students make play dough in groups. Each group is assigned a different ratio of flour to water.

Overall Rating:

Grades:

7th - 10th