3.3  Equations of Circles
In this mini unit, you will explore how circles are described on a coordinate grid. Once you have a better understanding of what the standard form of an equation for the circle is, you will use it to answer questions and to create your own circle art!

Objectives
Learning: I will develop and use equations for circles in a coordinate plane. Language: I will create a picture using circles then demonstrate my knowledge by determining the equation of the circles in my drawing and labeling them accordingly. 
1. Download and print the worksheet available below and to the right, Discovering Circles. Use the applet below to help you answer questions based on specific coordinates and the equations provided on the worksheet.

2. Once you have completed the worksheet, checkout this informational website (good chance to fill in your cheat sheet) and check your understanding of the equation for circles by working through the examples provided.

3. Watch the video to see where the 'Standard Form' of the circle equation came from. Then practice all your new skills by downloading and printing the Circle Practice WS found below.

4. Check your understanding by taking the short quiz available by following the link below. When testing, you do not have to complete problem 1 or 3 as those cover a skill that is not necessary for the unit.
5. Download and print the graph paper available below, then complete the instructions posted to the right to create a 'Circle Picture' that demonstrates your knowledge of circle equations.
