7.9The student will compare and contrast the following quadrilaterals: parallelogram, rectangle, square, rhombus, and trapezoid. Deductive reasoning and inference will be used to classify quadrilaterals.

Directions

    In this worksheet you will investigate how to find the area of a parallelogram.
  • 1) Move the Base And Height sliders to change the size of the parallelogram.
  • 2) Move point F and change the shape of the parallelogram, then move the top slider, describe what it does to the parallelogram.
  • 3) What conjecture can you make about the formula for area for a parallelogram? Test this conjecture with 5 different Base and Height combinations and record your results.

Hands-On Activities

  • Regentsprep Here are some notes about the quadrilateral family. At the end of the lesson there is a link to get practice problems.
  • Tangram Online directions to make a set of tangrams and an activity using them.
  • Jeopardy Game Review

Other Web Sites

  • Quadrilaterals This is a concentration type game with the shape and name of the quadrilaterals.
  • ExploreLearning Teachers have to assign the Classifying Quadrilaterals-Activity B to their classes.
  • Larson´s Software Students need to be enrolled by their teachers. Click on the More Geometry in a Plane, then click on Properties of Quadrilaterals.

Lesson 4-1: Quadrilaterals


See the directions on the right

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Created with GeoGebra by Edward M. Knote, 2007.