Activity Database

Search
Activity Authors
Activity Circles
Click To Sort By
Grade
Audience
  • 3rd - 5th (2)
  • 6th - 8th (2)
  • 9th - 12th (1)
  • College Level (1)
  • For Teachers (2)
Topics
Topics
  • Algebra / Arithmetic (1)
  • Combinatorics (1)
  • Geometry (1)
  • Mathematical Games (1)
  • Number Theory (1)
  • Problem Solving / General (1)
Supporting Materials
Supporting Materials
  • Facilitator Guides (2)
  • Handouts (1)
  • Lesson Plan (1)
  • Photos & Videos (1)
  • References (1)
Session Styles
Session Styles
  • Manipulatives (1)
  • Problem Posing (1)
  • Problem Sets (2)
  • Try a Smaller Problem (2)
  • Work Backwards (2)
Mathematical Practices
Mathematical Practices
  • MP1 - Make sense of problems and persevere in solving them. (2)
  • MP2 - Reason abstractly and quantitatively. (2)
  • MP3 - Construct viable arguments and critique others' reasoning. (2)
  • MP4 - Model with mathematics. (2)
  • MP5 - Use appropriate tools strategically. (1)
  • MP6 - Attend to precision. (2)
  • MP7 - Look for and make use of structure. (2)
  • MP8 - Look for and express regularity in repeated reasoning. (2)

Mind Reading With Math

By:


For the Math Mind Reading Trick, you’ll need a volunteer who’s willing to have their mind read. The person performing the trick holds out the four cards and askes their volunteer to pick a number (whole numbers only, no fractions allowed!) between 1 and 15 and keep it a secret. Next, the mind-reader asks the volunteer if their number is on the cards one-by-one. The volunteer answers the questions with yes or no answers, and with some magic and a little math, the mind-reader figures out their number!