This zipped folder contains the description of a lesson that will engage students in discovering the formula for the area of a parallelogram.
The folder also has a copy of a Do Now that can be used to begin the students thinking about find the number of square units contained in several figures. Answers to the Do Now are included.
Copies of two parallelograms are included for students to manipulate as part of the lesson.
If you have Geometer's Sketchpad, you can use the enclosed file to show a changing parallelogram and the related rectangle. This makes the lesson even more interactive.
The folder also has an assignment with 5 problems. Answers are included.