This lesson plan includes a warm up, class activity, power point presentation, class notes for the student to fill in during the lesson, a quiz, homework, and a bulletin board poster.
Students derive the formula for the area of a parallelogram using a shape-building activity. The students use cut outs to build different combination shapes. The students find the area of the shapes they build and some pre-made parallelograms. They will see that parallelograms are made from two triangles or two triangles and a rectangle.
The power point presentation solidifies the activity and makes sure all students were able to figure out the formula for the area of parallelograms.
There are fill in notes for the students to actively listen while going through the powerpoint.
A full lesson plan is provided to guide you through the lesson.
The homework has three pages of problems each page gets progressively more difficult allowing the teacher to easily differentiate the level of work depending on the class or individual student's ability. The last page of the homework is full of challenge questions with other combination shapes for the advanced student.
There are also two levels for the quiz.
Answer keys for the assignments and teacher copies of the class notes are provided.
This lesson covers common core standard:
Areas of special Quadrilaterals (Parallelograms)
A lesson that follows this same method to build the formula for areas of shapes, but for trapezoids can be found here:
Area of Trapezoids
If you are looking for other geometry lessons please look here:
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