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Description |
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Grades |
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Topics |
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Software |
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Exterior Angles of triangle |
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Can you figure out a method to determine the measure of the exterior angle of the triangle in each sketch without using a measuring device or Sketchpad’s tools? Study your results carefully. Next determine angle BCD in the figures above without using any measuring device like a protractor. Explain (1) what you did and (2) why it works. |
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7, 8 |
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Geometry |
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GSP |
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 |
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Far Fetched Areas Glitch Problem |
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In order to find out the area we need to make a drawing of our tiles and then use a program called the Geometer’s Sketchpad to tell us how many square centimeters there are in our tiles. |
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6, 7 |
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Geometry |
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GSP Applet |
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 |
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How High? |
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In this activity you will learn something about how to determine the volume (how much liquid) there is in the rectangular Tank. |
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7 |
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Geometry |
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Applet |
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Job Offer |
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YOU GOT THE JOB! You have a choice of 2 payment plans. Study carefully both plans before deciding. |
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7 |
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Algebra, Geometry |
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SS |
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 |
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Pattern Blocks for Sale |
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How much should we charge for the design if the square costs $1.00? |
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6, 7 |
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Geometry |
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GSP |
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 |
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Spinwheels II |
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Version 3 of spinwheel with hole. |
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6, 7 |
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Geometry |
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GSP |
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 |
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Tessellations: Semi regular |
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This activity asks the student to make a semi-regular tessellation. There are 8 such tessellations. Students use Sketchpad shapes above to make all the tessellations and then explain why they tessellate. |
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7, 8 |
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Geometry |
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Applet |
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