Number Sense

Triple Crown possibilities, 2015

Updated for 2017! American Pharaoh was the first horse to win not only the Triple Crown but also the Breeder’s Cup race = Grand Slam!  Never done before. Involve your students in this soon-to-be event while reviewing fractions, calculating miles…

How Many Donuts is That?

Act One:  Take a look at the picture.  What is the first question that comes to mind? How many donuts is that?  What information would be useful? Act Two: See pictures below. Your students can view all five pictures on…

Growth of Facebook update

Facebook is so accepted in our world today that it is even part of nightly news broadcasts as people are noted for receiving huge numbers of likes in appreciation or interest. Mark Zuckerberg, the founder and CEO of Facebook, is…

Earthquake magnitudes, Nepal

Nepal has just experienced several tremendous earthquakes and aftershocks causing massive damage and loss of life. The IRIS (Incorporated Research Institute of Seismology) Seismic Monitor will allow your class to visualize the most recent quakes and their magnitudes in this region. Our updated…

McDonalds moves towards antibiotic-free chicken

Recently McDonald’s announced that by 2016 they will use only chicken raised without the antibiotics that are used in human medicine.  McDonald’s plans to join Chick-fil-A, Panera Bread, Chiptotle, and Whole Foods in the move towards removing antibiotics in the…

Peeps

How many Peeps are sold at Easter time each year? Treat your students to some authentic and delicious Easter math.  Students estimate the number of Peeps sold each Easter season.  They consider reasonability by making guesses they think might be…

Passover macaroons

Passover begins this year on Monday evening, April 10th, 2017, with a Passover seder dinner. Passover is one of the three high holidays in the Jewish religion and celebrates the Exodus of Jews from slavery in Egypt. Let your students…

Chili Con Queso

Act 1: Take a look at the promo at Moe’s.  What is the first question that comes to mind? How much does a 42-gallon jug of Chili Con Queso cost?  How many cups or bowls of Chili Con Queso is that?…

2015 World Cup Cricket

The Cricket World Cup is being played now in Australia and New Zealand.  This is a complex game that seems to be played with enthusiasm and humor.  In this activity students learn about the game; watch a couple of videos…

Huge Key Lime pie

On a cold and snowy day in Boston, two chefs created a huge Key Lime pie to remind the frozen people of the Northeast how tasty and warm the Keys of Florida are. After you show this movie to your…

Which Sweet Hearts are the Best Deal?

 I have been doing a little shopping for Sweet Heart Candies. I came across these three deals online.  Which should I select?  In this activity students determine which package of Necco Sweet Heart Candies is the best deal.  Students are…

A parametric heart … with love

Valentine’s Day is a good excuse to explore parametric equations. First students figure the coordinates of this figure using trigonometric unit triangles. Then they simplify and accelerate this task with either a graphing calculator or with online software like Desmos…

Deflategate

The deflated ball controversy makes an interesting segue into negative number line understanding.  A particular digital psi football gauge reads 0 when the ball is at a proper NFL inflation of 13 psi.  Footballs inflated under 13 psi produce negative psi readings…

Cost of a gallon of gas

In 1950, one gallon of gasoline costs $0.27.  Today the prices are going down but are they as low as they were in 1950?  Or could $0.27 buy more in 1950? In this activity we begin to understand the relative…