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Sign into Discovery Education (remember to sign in using your school Google account).

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Sign into Discovery Education (remember to sign in using your school Google account).

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Discover thousands of math skills covering pre-K to 12th grade, from counting to calculus, with infinite questions that adapt to each student’s level.

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Estimation 180

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ESTIMATION 180 is a place for both students and teachers to enjoy making sense of math and develop their number sense together.

Pick from over 200 visual estimation tasks that invite all your students to be part of rich math conversations and learning.

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How do I get started? 1 USE THE FREE MATH LESSONS Estimation 180 Tasks 3-Act Tasks 2 SUBSCRIBE Email Newsletter Podcast

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with special thanks to Christopher Danielson and his Which One Doesn’t Belong - A Shapes Book.

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with special thanks to Christopher Danielson and his Which One Doesn’t Belong - A Shapes Book.

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Nrich Starters

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If you've arrived at this page looking for activities that will help you to develop your mathematical thinking skills, you may be interested in our new Thinking Mathematically Collection.

Are you a student who likes to think about mathematical problems?

Why not test and develop your skills with this special selection of NRICH problems? They have been chosen because they only make use of simple mathematical concepts (the sort encountered as some point early in Stage 3): the emphasis is on the thinking rather than the knowledge.

Why not print out the table and tick off the problems you have solved? Will you be able to crack them all? Don't forget, if you get stuck you can look at the Hint or Solution at the top of each problem.

Happy solving!

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On this page we give a selection of good starter activities for those new to NRICH

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Puzzle Index — EMMAths: Learning and Teaching

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Here are all of my puzzles, grouped by category.

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bold, bright and beautiful  ideas for mathematics teaching, learning and play

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Bold, bright and beautiful ideas for mathematics teaching, learning and play. Here you will find resources for mathematical art activities, ideas for classroom display, and suggestions for using origami in mathematics lessons.

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GeoGuessr is a geography game which takes you on a journey around the world and challenges your ability to recognize your surroundings.