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Phi: The divine proportion

In CareerStart lessons: Grade six, page 2.5

The "divine ratio" is valued by designers, artists, and architects because of its interesting and and unique properties. In this lesson for grade six, students learn about this ratio and use it to create a work of art.

Format: lesson plan (grade 6–7 Mathematics)

By Kim Abrams, Mike McDowell, and Barbara Strange.

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Finding perimeter and area

Students develop strategies for finding the perimeter and area for rectangles and triangles using geoboards and graph paper. They also learn how measurement is a critical component in planning a clubhouse design. Illuminations provides and activity sheet... (Learn more)

Format: lesson plan (grade 4 Mathematics)

Provided by: Illuminations