**The Challenge: **Find a smaller circle you can trace. Then trace large circle to use as a guide. Finally, trace a bunch of smaller circles in a ring to create a torus (more commonly known as a donut).

*Materials Needed*: Paper, writing utensil(s), circles/compass. The circles can be whatever, but rigid is helpful and even better if they’re empty (masking tape is great!)*Math concepts* *you could explore with this challenge: *circles, geometric construction, proportions/ratios (to get interlocking tori, there are restrictions on the possible ratios between the circles)