Unit 4

Circles and Area

"In this unit, direct or indirect measurement is used to solve problems. It also includes the construction of circles, the sum of the central angles of a circle, and specific reference to pi. Students will build meaning for the area of a parallelogram based on their understanding of the area of a rectangle. They will then connect the area of a triangle to the area of a parallelogram. Finally, they will explore the area of a circle by rearranging it into a parallelogram or a rectangle. Students will collect and organize data, and then use the data to create circle graphs and solve problems. A circle graph will be used to compare parts of a whole to the whole. Two circle graphs will be used to compare parts of two separate wholes to each other. Circle graphs are particularly useful for comparing the frequency of data in one category to the entire set of data, while still allowing for comparisons among categories." - Grade 7 Curriculum Guide

Below are some items that may be helpful. Most notes and the like are posted into your Google Classroom.

Here is a fun little review.

Parallelogram Khan Lesson

Triangle Khan Lesson

Area of a Triangle song to help remember the formula.

THE Circle Song to help remember the circle stuff.

How to use a protractor: https://www.visnos.com/demos/basic-angles

Protractor Game: https://www.mathplayground.com/measuringangles.html

Some videos and practice to keep you caught up from NL teachers? Here ya go!