ALEX Lesson Plans
Thinkfinity Lesson Plans
Subject: Mathematics Title: Approximations of Pi
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Description: This student reproducible, from an Illuminations lesson, provides information about and several examples of approximations for the constant pi. Thinkfinity Partner: Illuminations Grade Span: 6,7,8
Subject: Mathematics Title: Finding Surface Area and Volume
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Description: In this lesson, one of a multipart unit from Illuminations, students use an isometric drawing tool to build threedimensional figures. They then find the surface area and volume of each figure. Thinkfinity Partner: Illuminations Grade Span: 6,7,8
Subject: Mathematics,Science Title: Orbiting Satellites
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Description: In this lesson, from Illuminations, students explore the concept of orbits, specifically the connection of Earthorbiting satellites to the study of the environment. Both geometric and algebraic concepts are presented to students in this application of science and mathematics to a realworld situation. Thinkfinity Partner: Illuminations Grade Span: 6,7,8
Subject: Mathematics Title: Pi Line
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Description: In this Illuminations lesson, students measure the diameter and circumference of various circular objects. They plot the measurements on a graph and relate the slope of the line to the ratio of circumference to diameter. There are also links to online activities. Thinkfinity Partner: Illuminations Grade Span: 9,10,11,12
Subject: Mathematics Title: Slope, Pi, and Lines
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Description: These reproducible transparencies, from an Illuminations lesson, feature preactivity and summary questions on slopes, pi and lines. Thinkfinity Partner: Illuminations Grade Span: 9,10,11,12
Subject: Mathematics Title: Slope, Pi, and Lines Activity Sheet
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Description: This reproducible activity sheet, from an Illuminations lesson, guides students as they measure circle circumferences and diameters and graph the relationship between these two measurements. Thinkfinity Partner: Illuminations Grade Span: 9,10,11,12

