First, students learn how to identify the center and radius of a circle from its standard equation.

Features of a circle from its standard equation by Khan Academy

Features of a circle from its standard equation by Khan Academy

Next, students will learn how to graph a circle from its standard equation.

Graphing a circle from its standard equation by Khan Academy

Graph a circle from its standard equation by Khan Academy

After that, students will learn how to find the standard equation of a circle from its graph.

Writing standard equation of a circle by Khan Academy

Write standard equation of a circle by Khan Academy

Conclude by giving your students these challenges:

- Quadruple Sudoku by NRICH
- Arrange the Digits by NRICH
- Forgotten Number by NRICH
- Same Length by NRICH
- A Complicated Area