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View Resource Measurement and Geocaching

Students may use this lesson to use geometry, trigonometry and GPS to locate a geocache in their area. With a handheld GPS device and the coordinates of the cache, geocachers attempt their own personal treasure hunt. This lesson has two possible strands, one where students create a data set, and one where students use a previously created data set. Student materials including student data sets...

View Resource Perplexing Parallelograms

This geometry lesson from Illuminations asks students to draw two line segments through a point on the diagonal of a parallelogram and parallel to the sides. Students will examine a geometric shape, analyze the patterns of the shape, and create conjectures, which they will then try to prove or disprove. The material is appropriate for grades 9-12 and should require 1 class period to complete.

View Resource Security Cameras

Using the real world example of security cameras, this lesson has students explore properties of polygons. Using this example, students will be able to discover a formula as related to polygons. An activity sheet and student questions are included. This material is intended for students from grades 9-12 and should require 1 class period to complete.

View Resource Seeing Music

This interdisciplinary lesson uses musical terms and concepts to teach algebra and geometry. Students will analyze musical scales and frequencies generated by a geometric sequence, and relate sine waves to musical harmony and dissonance. The activity includes student questions, an activity sheet and audio clips that may be used. The material is intended for grades 9-12 and should require 2 class...

View Resource Stacking Squares

This math lesson from Illuminations uses squares to represent equivalences involving square- and cube-roots. Students will be able to make and test theories of connections between geometric and numeric representations of squares and between whole numbers and their square-roots. The lesson is intended for grades 9-12 and should require 2 class periods to complete. A student activity sheet is...

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