These are some of our favorite places to find inspiration and fun puzzles:
A great resource from the Stanford University Graduate School of Education for open-ended math activities for grades K-12.
Another great resource for open-ended math activities for grades K-12 from the University of Cambridge.
A fantastic resource for open-ended math activities for GRADES K-6 grade.
Our favorite site for math and physics problems and community for 5th grade to adult.
An amazing global community united behind the mission to bring "Uplifting Mathematics for All!".
Great source of Japanese-style puzzles for all ages and difficulty levels.
Cool growing visual patterns to inspire rich mathematical conversations from "How many next?" to "What is the formula?"
Lots of great inspiration and downloadable puzzle booklets for Grades K-12.
A great practical resource for teachers with visually compelling puzzles and games to engage students in tough problem solving for Grades K-12.
Fabulous resource for finding interesting mathematical webinars and events in Spanish and for all ages.