Activity Database

Search
Activity Authors
Activity Circles
Click To Sort By
Grade
Audience
  • 1st - 2nd (12)
  • 3rd - 5th (30)
  • 6th - 8th (79)
  • 9th - 12th (81)
  • College Level (68)
  • For Teachers (77)
Topics
Topics
  • Problem Solving / General (39)
  • Probability and Statistics (3)
  • Social Justice Mathematics (1)
  • Algebra / Arithmetic (33)
  • Combinatorics (31)
  • Geometry (35)
  • Mathematical Games (26)
  • Mathematical Modeling (11)
  • Number Theory (25)
  • Parity / Invariants (2)
Supporting Materials
Supporting Materials
  • Facilitator Guides (87)
  • Handouts (34)
  • Lesson Plan (7)
  • Photos & Videos (27)
  • References (33)
  • Virtual Tools (14)
Session Styles
Session Styles
  • Work Backwards (21)
  • Integrates Technology (13)
  • Kinesthetic Element (11)
  • Manipulatives (33)
  • Multiple Representations (29)
  • Problem Posing (44)
  • Problem Sets (47)
  • Try a Smaller Problem (40)
Mathematical Practices
Mathematical Practices
  • MP1 - Make sense of problems and persevere in solving them. (83)
  • MP2 - Reason abstractly and quantitatively. (49)
  • MP3 - Construct viable arguments and critique others' reasoning. (57)
  • MP4 - Model with mathematics. (54)
  • MP5 - Use appropriate tools strategically. (40)
  • MP6 - Attend to precision. (36)
  • MP7 - Look for and make use of structure. (68)
  • MP8 - Look for and express regularity in repeated reasoning. (61)

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!