In my math classroom, I emphasize a growth mindset, and do my best to encourage students to believe in themselves as math learners! We work often with numbers, developing a solid understanding of the fundamentals of working with numbers. From there, I encourage thoughtful, neat, step-by-step problem solving. Khan Academy is our primary math resource, supplemented by UWaterloo Problems of the Week, and the online resources below.
The University of Waterloo releases "problems of the week" that we tackle together - we also use Estimation 180, YouCubed, and more.
Khan Academy is the best online math resource I have found. Students love it, teachers find it informative and useful.
Jo Boaler from Stanford is a top expert and researcher studying math learning - visit her YouCubed website for activities, resources, courses, and more.
3-act math is a technique developed by Dan Meyer, Kyle Pearce, and others. Kids LOVE the "notice / wonder" component!
The CEMC produces the uWaterloo Math Problems of the Week during the school year, and the kids love tackling them in groups!
Estimation 180 is a great site to get kids talking about and using their number sense, and numeration abilities. Great videos and exercises!
Visual Patterns helps students improve their spatial sense, and pattern finding abilities - it's best for grade 7 and up algebra students.
Which One Doesn't Belong helps students recognize patterns and improve their math talk.
Peter Liljedahl's Thinking Classrooms research provides resources and a framework for helping students learn as much as possible in math class.
Solve Me Puzzles are solid games that kids will find entertaining, and will learn by mistake! It makes them work with numbers, and learn algebra.
Mathies is Canadian, Ontario based, with all kinds of games and tools for kids to learn math.