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Curated Video
"Prove" 3 = 0. Can You Spot The Mistake?
Thanks to Lucas from Brazil who sent this problem! This is a proof that 3 = 0 using sneaky algebra that I had never seen before (this is a sneaky mistake, not a simple divide by 0 fallacy). Every step seems correct, but the conclusion is...
Curated Video
Can You Solve The Number Of Children Riddle?
Many people make mistakes in this seemingly routine algebra problem. The average age of a family (two parents and their children) is 20. If we exclude one parent, who is 40, the average age drops to 15. How many children are in the...
PBS
Wnet: Thirteen: Get the Math: The Challenges the Setup
This brief video introduces the professionals who will pose real-world math challenges connected to their work and the students who will tackle the challenges. Real-world challenges are set up in the areas of music, fashion, video games,...