Explore arithmetic that wraps around like a clock and use it to solve remainder and last digit puzzles.
Learn how remainders work in modular arithmetic and use cycles to find last digits and days of the week.
Draw polygons on dot paper, count points, and discover a formula for area using only dots.
50 to 90 min · 4 materialsView projectEncrypt with a keyword and break the cipher by splitting the message and using frequency analysis on each part.
1 to 1.7 hr · 4 materialsView projectDiscover why you can test for divisibility by 3 and 9 by adding digits, and prove it.
45 to 75 min · 3 materialsView projectDiscover systematic ways to count arrangements and selections, and use them to solve olympiad-style problems.
50 to 80 min · 3 materialsView projectDecide whether a route can cross every bridge once and discover the rule that solves every such puzzle.
50 to 80 min · 4 materialsView projectLaunch a marble off a table from different ramp heights and test a physics model of how far it lands.
1.5 to 2 hr · 7 materialsView projectEduVistaHQ.com · Learn • Explore • Grow