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BrainBashers - brain teasers, puzzles, riddles, and more
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Brain Teasers I – a brain teaser a day (not all appropriate)
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Brain Teasers II – a brain teaser a day (not all appropriate)
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Brilliant – solve and discuss thousands of problems
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Daily Skyscrapers – my favorite BrainBasher game
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Feynman – long division puzzles
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Hersam – brain teasers
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Mathematics Contest Archive – from Waterloo
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nRich – specialists in rich mathematics
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Project Euler – 454 number problems
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Problem of the Day Archive – University of Waterloo
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Question of the Day – mixed bag
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TestFunda I – puzzle of the week
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TestFunda II – puzzle of the week
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TestFunda III – puzzle of the week
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Vur@li’s Blog – brainteasers and puzzles
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Would You Rather? – asking students to choose their own path
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Three-Act Math Tasks – from Dan Myer
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World’s Hardest Easy Geometry Problem – easy to start …
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TIMES Modules – from Australian curriculum
BUILDING THINKING
CLASSROOMS
Stay inspired with periodic insights — no spam, just great ideas! Join now for free resources, sample tasks, and classroom strategies.
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Keynote Presentations
Join Peter Liljedahl in online workshops. Get practical strategies, video lessons, and ideas to support student thinking—at your own pace.
BUILDING THINKING
CLASSROOMS
Stay inspired with periodic insights — no spam, just great ideas! Join now for free resources, sample tasks, and classroom strategies.
Discover More About Building Thinking Classrooms
BUILDING THINKING
CLASSROOMS
Stay inspired with periodic insights — no spam, just great ideas! Join now for free resources, sample tasks, and classroom strategies.
WHAT IS
Building Thinking Classrooms?
Sparked by observing teachers struggle to implement rich mathematics tasks to engage students in deep thinking, Peter Liljedahl has translated his 15 years of research into a set of 14 optimal practices for thinking that create an ideal setting for deep mathematics learning to occur. When combined, these unique research-based practices create the optimal conditions for learner-centered, student-owned deep mathematical thinking and learning, and have the power to transform mathematics classrooms like never before.
Click the BTC Toolkit Image for a Detailed Overview of BTC Practices and More!
