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Nelson Education > School > Mathematics K-8 > Math Focus > Grade 7 > Student Centre > Surf for More Math > Chapter 5 - Lesson 1

Surf For More Math


Lesson 1: The Area of a Parallelogram


Develop and apply the formula for the area of a parallelogram.

Instructions for Use

Area of a Paralellogram

Read the “Instructions” section and then the “Exploration” section. Try creating several different rectangles from the parallelogram. Make sure you find out what measurements of the parallelogram you need in order to find its area.

Area of a Paralellogram--Calculations

Drag the orange dots on the vertices to move and resize the parallelogram. As the size of the parallelogram changes, the area will be recalculated.

Also try estimating the area of some parallelograms by clicking on “hide details.” Then, drag the orange dots on the vertices to make a random-sized parallelogram. Now estimate the area of the parallelogram just by looking at the squares inside it.