https://mathcircles.org/activity/gerrymandering/2026-01-26T12:07:15-08:00https://mathcircles.org/activity/prejudiced-polygons/2022-07-13T11:03:49-07:00https://mathcircles.org/activity/set/2022-07-13T11:25:31-07:00https://mathcircles.org/activity/skyscrapers/2026-01-26T14:50:21-08:00https://mathcircles.org/activity/puppies-kittens/2022-07-13T11:07:38-07:00https://mathcircles.org/activity/rational-tangles/2022-05-10T10:16:54-07:00https://mathcircles.org/activity/dollar-game/2022-06-14T13:24:38-07:00https://mathcircles.org/activity/queens-move/2026-01-26T14:18:46-08:00https://mathcircles.org/activity/humans-zombies-rivers/2021-09-16T18:04:24-07:00https://mathcircles.org/activity/tic-tac-toe-2-0/2026-01-29T12:55:41-08:00https://mathcircles.org/activity/measuring-up-perfect-rulers/2024-02-06T15:38:28-08:00https://mathcircles.org/activity/winning-the-lottery-an-expected-value-mystery/2026-01-26T15:18:50-08:00https://mathcircles.org/activity/walk-the-line/2026-01-26T13:44:16-08:00https://mathcircles.org/activity/the-jug-band/2026-01-26T14:57:35-08:00https://mathcircles.org/activity/trigonometric-ratios/2022-07-13T11:32:40-07:00https://mathcircles.org/activity/systems-of-linear-equations/2022-07-13T11:20:50-07:00https://mathcircles.org/activity/system-of-inequalities-math-dance/2022-07-13T11:20:11-07:00https://mathcircles.org/activity/supreme-court-handshakes/2022-07-13T11:19:39-07:00https://mathcircles.org/activity/solving-linear-equations-mystery/2022-07-13T11:18:18-07:00https://mathcircles.org/activity/rational-numbers/2022-07-13T11:10:36-07:00https://mathcircles.org/activity/percents/2022-07-13T10:56:02-07:00https://mathcircles.org/activity/making-connections-quadratic-equations/2022-07-13T10:53:09-07:00https://mathcircles.org/activity/wolves-and-sheep/2026-01-26T15:19:11-08:00https://mathcircles.org/activity/bubbling-cauldrons/2026-01-26T13:07:35-08:00https://mathcircles.org/activity/practical-probability/2022-07-13T11:01:52-07:00https://mathcircles.org/activity/monty-hall-problem/2022-07-13T10:50:05-07:00https://mathcircles.org/activity/visualization-in-algebra/2022-07-14T11:24:05-07:00https://mathcircles.org/activity/touching-infinity/2026-01-26T15:15:56-08:00https://mathcircles.org/activity/tiling-with-pentagons/2026-01-26T15:06:22-08:00https://mathcircles.org/activity/the-roommate-game/2026-01-26T15:00:13-08:00https://mathcircles.org/activity/the-mad-veterinarian/2026-01-26T15:24:27-08:00https://mathcircles.org/activity/the-futurama-theorem/2022-07-14T11:06:04-07:00https://mathcircles.org/activity/the-1-to-100-problem/2022-07-13T11:21:31-07:00https://mathcircles.org/activity/simplex-locks/2026-01-29T12:51:43-08:00https://mathcircles.org/activity/shifting-gears/2026-05-30T09:24:31-07:00https://mathcircles.org/activity/semiregular-tilings/2026-01-26T14:47:08-08:00https://mathcircles.org/activity/recruiting-change-for-a-dollar/2026-01-26T14:24:17-08:00https://mathcircles.org/activity/quilt-while-youre-ahead/2026-01-26T14:22:29-08:00https://mathcircles.org/activity/puzzles-bands-knots/2026-01-26T14:18:01-08:00https://mathcircles.org/activity/probability/2022-07-13T11:05:10-07:00https://mathcircles.org/activity/primes-divisibility-and-modular-arithmetic/2022-07-13T11:04:19-07:00https://mathcircles.org/activity/primes/2022-07-13T11:04:27-07:00https://mathcircles.org/activity/picks-theorem/2022-07-13T10:57:49-07:00https://mathcircles.org/activity/place-value-problems/2022-07-13T11:01:21-07:00https://mathcircles.org/activity/pigeonhole-principle-and-parity-problems/2022-07-13T11:01:13-07:00https://mathcircles.org/activity/piece-of-cake/2026-01-26T14:09:17-08:00https://mathcircles.org/activity/taxi-cab-metric/2022-07-13T10:56:08-07:00https://mathcircles.org/activity/building-numbers-with-four-operations/2026-01-26T14:07:14-08:00https://mathcircles.org/activity/mathematical-magic-for-muggles/2022-07-13T10:52:54-07:00https://mathcircles.org/activity/mathematical-games/2022-07-13T10:53:23-07:00https://mathcircles.org/activity/mathemagical-card-tricks/2024-03-13T16:22:57-07:00https://mathcircles.org/activity/match-or-no-match/2022-07-13T10:53:04-07:00https://mathcircles.org/activity/magic-latin-and-sudoku-squares/2024-03-13T16:11:23-07:00https://mathcircles.org/activity/lockers/2022-07-13T10:43:47-07:00https://mathcircles.org/activity/locked-out/2026-01-26T14:01:50-08:00https://mathcircles.org/activity/mind-reading/2026-01-26T14:03:30-08:00https://mathcircles.org/activity/mondrian-puzzles/2026-01-26T14:03:05-08:00https://mathcircles.org/activity/flipping-pancakes/2026-01-26T13:32:54-08:00https://mathcircles.org/activity/squaring-the-square/2026-01-26T14:55:07-08:00https://mathcircles.org/activity/factor-game/2022-05-10T10:15:27-07:00https://mathcircles.org/activity/folding-thirds/2022-05-10T10:14:53-07:00https://mathcircles.org/activity/acting-out-mathematics/2026-01-26T12:45:12-08:00https://mathcircles.org/activity/grid-power-2/2022-05-11T15:35:00-07:00https://mathcircles.org/activity/liars-bingo/2026-01-26T13:51:48-08:00https://mathcircles.org/activity/bicycle-math/2026-05-30T09:05:42-07:00https://mathcircles.org/activity/coloring/2026-01-26T13:16:20-08:00https://mathcircles.org/activity/count-me-in/2022-05-10T10:16:35-07:00https://mathcircles.org/activity/counterexamples/2026-01-26T13:21:52-08:00https://mathcircles.org/activity/coins-in-twoland/2026-01-26T13:16:14-08:00https://mathcircles.org/activity/codes-ciphers-and-secrets/2026-01-26T13:16:08-08:00https://mathcircles.org/activity/catalan-numbers/2022-05-10T10:18:48-07:00https://mathcircles.org/activity/can-you-spot-it/2026-01-26T13:14:17-08:00https://mathcircles.org/activity/daydreams-in-music/2026-01-26T13:24:20-08:00https://mathcircles.org/activity/euler-characteristic-exploration/2024-03-13T13:39:36-07:00https://mathcircles.org/activity/can-voting-ever-really-be-fair/2026-01-26T13:11:38-08:00https://mathcircles.org/activity/big-numbers/2022-05-10T10:20:08-07:00https://mathcircles.org/activity/art-meets-math-eschers-tilings/2026-01-26T12:53:58-08:00https://mathcircles.org/activity/animated-activities/2026-01-26T12:46:23-08:00https://mathcircles.org/activity/a-problem-fit-for-a-princess-apollonian-gaskets-in-history/2026-01-26T12:44:02-08:00https://mathcircles.org/activity/license-plates-and-divisibility/2022-05-10T11:10:23-07:00https://mathcircles.org/activity/knights-and-knaves-a-journey-to-the-land-of-logic/2022-03-03T12:07:24-08:00https://mathcircles.org/activity/kenken/2022-05-10T11:07:37-07:00https://mathcircles.org/activity/introduction-to-finite-systems-z6-and-z7/2022-05-10T11:06:44-07:00https://mathcircles.org/activity/introduction-to-diophantine-equations/2022-05-10T11:04:36-07:00https://mathcircles.org/activity/intersection-math/2022-05-10T10:57:56-07:00https://mathcircles.org/activity/intergenerational-wealth/2023-03-15T08:52:37-07:00https://mathcircles.org/activity/i-see-platonic-solids-in-your-future/2024-03-13T15:58:48-07:00https://mathcircles.org/activity/hyperbolic-footballs/2022-03-07T09:53:50-08:00https://mathcircles.org/activity/how-do-you-connect-the-dots/2022-03-07T10:00:16-08:00https://mathcircles.org/activity/hercules-and-the-hydra/2022-05-10T10:25:36-07:00https://mathcircles.org/activity/function-diagrams/2026-01-26T13:40:31-08:00https://mathcircles.org/activity/good-things-come-in-unexpected-packages/2026-01-26T13:41:50-08:00https://mathcircles.org/activity/getting-started-with-problem-solving-a-trio-of-friendly-problems/2022-05-10T10:08:53-07:00https://mathcircles.org/activity/game-of-criss-cross/2022-05-10T10:14:23-07:00https://mathcircles.org/activity/cup-stacking/2022-11-05T06:30:52-07:00https://mathcircles.org/activity/fold-cut/2022-11-07T10:37:08-08:00https://mathcircles.org/activity/modeling-a-pandemic/2023-03-15T08:54:00-07:00https://mathcircles.org/activity/racial-profiling/2023-03-15T08:53:47-07:00https://mathcircles.org/activity/mural-mathematics/2023-03-15T08:53:32-07:00https://mathcircles.org/activity/food-deserts-in-ct/2023-03-17T08:47:25-07:00https://mathcircles.org/activity/grade-optimization/2024-07-30T16:10:02-07:00https://mathcircles.org/activity/stomachion-archimedes-box/2026-01-26T14:55:22-08:00https://mathcircles.org/activity/puzzling-pairs/2024-10-21T14:45:54-07:00