Presentation during Opening Meeting
Laughter while discussing an example
Philadelphia selife
10 seconds after the start of MathILy, an entire Root class is at the board at once
Daily Gather giver Pavle (MathILy alumn and Jane Streeter) checks in with working students
Leo focuses on taking official notes
MathILy 2025 walks the Bryn Mawr labyrinth
Run out of room on the board? Just mail the proof to yourself on another board.
Collaboration in Daily Gather
Alex explains an idea
Clamp2: Your breakfast is evil if you pour syrups that aren't a sofa...
A surprising bifurcation diagram
Hannah's Root class
Brian's Root class
sarah-marie's Root class
Working together during Nadav's Daily Gather
Rotation and reflection redux
Fishbox party covers Baby Dietmars
Discussion during Daily Gather
Week of Chaos collaboration
MathILy-Er alumn reunion with LI-Ers
Photographs of a selfie
Jadon learned to blow a bubble within a bubble
Jadon (weeks later) with a multimegabubble
Hanging out and playing SET
Frida explains an idea
Pablo wears Sophia's glasses...
...and Evelyn's?...
Many discussions during Daily Gather
...and Frida's.
Five friends love LOVE
Playing ping-pong with cell-phone paddles
Afternoon soccer
The infectious disease modeling class collaborates on coding
Lily checks in with a group in Be There or Be Square
sarah-marie's Root class accidentally dressed in a rainbow
Arjun shares thoughts with Frank
Yoyo explains her idea
Boardwork from the How to Party Hard class
Clark and Narnia simulpresent
Undeterred by a fire alarm, Florina continues her proof presentation outdoors
Miles has a certain... theme... in drawings.
Five people (including a Daily Gather visitor) in one tree
Piano quintet performance
MathILy-Er alumn MathILy students pull out eggs when visiting
Darsh makes art near a Diagonal Triangle
Living Diagonal Triangle
Two working groups in one class
STAB YOUR HAND
Alumn Will Bender explains his summer research to a Branch class
Novel printmaking
The culprit(s)
Spark and sarah-marie square dance to Dance Squared
Fascination with Thomas's origami model
J gives a fishbox proof
Four hands piano performance
Leo, about to finish a Bedtime Stories card pyramid
MurderLy Branch class
Space Goat Soap Bubbles Branch class
Writing at the top of the board
Most MathILy 2025 attendees of the 2026 Joint Mathematics Meetings
Eelology Branch class
Teams contemplating questions in the #overheard game
MathILy and MathILy-EST 2025!
MathILy, MathILy-Er, and MathILy-EST are projects of the nonprofit organization Mathematical Staircase, Inc..