Saturday, March 14, 2026
Calling all as-pi-ring mathematicians… CAGIS Virtual is celebrating Pi Day!
Pi (not pie) is the ratio of a circle’s circumference to its diameter. It’s an irrational number, so it is never-ending: so far, over THREE TRILLION digits have been calculated! Join us as we make our own spirographs, geometric drawing tools, and dive into the science of circles with mathematics student and CAGIS graduate, Karah!
Time
Ages 7-12: 8 am PT • 9 am MT • 10 am CT • 11 am ET • 12 pm AT
Ages 13-17: 10 am PT • 11 am MT • 12 pm CT • 1 pm ET • 2 pm AT
Materials and Preparation
- Corrugated cardboard (thick cardboard) that is at a minimum 8.5” x 11”
- Scissors
- Masking tape roll, duct tape roll, painters tape roll, or other empty, ring-like object (note that the scotch tape refillable rolls are too small)
- Pens, pencils, pencil crayons, or thin markers in various colors
- Duct tape or electric tape (note that slippery tape like masking tape or scotch tape will not work here)
- Hole punch if available, can also use a pencil or pen
- Blank paper(s)
- String or yarn (bring multiple colours if you wish)
- Ruler
Meet the Expert
Karah Jensen
Karah Jensen is a fourth year student at the University of Toronto majoring in Mathematics, with minors in Statistics and Political Science, and she will be graduating this spring. A proud CAGIS alum, she enjoys making math feel approachable and fun. She’s excited to return as a STEM Expert for Pi Day and explore the number through an interactive and hands-on session.
This programming was developed by Karah Jensen, Mikaela Moore, and Sydney Brooks.
