These optional collections are here for mathematical curiosity. Open a collection, choose an individual video, and see where the idea takes you.
Video collection31 videos
Lightning-Fast Mental Math
mathOgenius
Explore mental calculation shortcuts for arithmetic, roots, percents, memory, calendars, the Trachtenberg system, and the soroban. These videos are for curiosity and enrichment; choose any title that interests you.
Video collection83 videos
Can You Solve This Riddle?
TED-Ed
Try story-based puzzles that build logic, careful reading, pattern recognition, and persistence. Each video presents a challenge and then explains its solution.
Video collection68 videos
Mathematical Doodles and Curiosities
Vi Hart
Explore Vi Hart's playful mathematical doodles, visual patterns, surprising number ideas, geometry, music, infinity, fractals, and creative experiments. These videos were created by Vi Hart and are presented here as individual links.
Video collection182 videos
Numberphile: Numbers, Puzzles, and Visual Mathematics
Numberphile
Explore approachable Numberphile videos about number patterns, fractions, primes, geometry, visual models, puzzles, probability, games, mathematical history, and mathematics in everyday life. These selections were chosen for curious Grade 6 students.