two magnets in a circle drawn on the chalkboard

Concept Overview:

1. Visualization of how an ellipse differs from a circle.

Lecturer Procedure
Step(s) to Follow Expected Result

1. Place the two magnets a distance apart.

2. Place the loop over both pegs.

3. Place chalk in the loop and pull to make rope tight.

4. Keeping the rope tight, draw a curve around the two foci.

An ellipse will be created.
Astro - 003