How often is Phil correct? Ground Hog Day

February 2nd, Punxsutawney Phil will again, with great ceremony, come out of his burrow and look for his shadow.  Let your students check out the relative frequency of his accurate predictions in this activity.  Are his chances of getting it right better than a coin toss?

The activity: groundhog-day2022.pdf

Lunar New Year 2022 – Year of the Tiger

Year of the Water Tiger

Celebrated by one-fourth of the world's population, Lunar New Year begins on Friday, February 1st. This will be the year of the Water Tiger.  The year's name is a combination of 10 Heavenly Stems and 12 Earthly Branches creating a sequence of year names that eventually repeat.

Students explore the least common multiple of these two cycles without ever hearing the term LCM.  They explore some of Asian culture and begin to understand the major significance of this annual event, while they “do the math”.

Lighting the 2022 Olympic Torch

On October 18th, 2021 the Olympic Torch was lit in Greece.  It was lit without the help of a flame or a match.  It was lit by concentrating the rays of our Sun.

From Olympia, runners traditionally carry the flame to the site of the next Olympics.  This year it has been carried to Beijing.

Spider-Man continues

Spider-Man: No Way Home opened on December 17, 2021.  

  • How much did it cost to make?
  • How much will it gross?
  • Is the Spider-Man phenomena a guarantee for success?
  • How would you compare all of the Spider-Man movies?

We've gathered data on each of the movies' budgets and earnings and posed some open-ended questions.  How do the Spider-Man movies compare?

Mystical Mathematical Mind Reader

Clicking on this image will take you to the Mind Reader online site at

Last year, Adobe stopped supporting Flash.  Since then, our very popular Ghost Whisperer activity (which was created by Andy Naughton and depended on Flash) has not been functional.

Luckily, John Tranter of Transum Mathematics, has recreated a non-Flash rendition of this awesome puzzling activity.

Students can play this game online at Mystical Mind Reader.

  • Figure out why it works.
  • Construct viable arguments
  • Critique the work of others

This activity can be used with any grade level elementary through high school.  Younger students might work with patterns, multiples and order of operations. Older students might work with systems of equations to prove how the Mystical Mind Reader works.