# Author: Leslie

## An ounce of cola

Which is more expensive; gasoline? milk? or cola?  Students calculate the per ounce cost of each of these liquids in a story about a man doing errands.  After finding the per ounce price, students find costs of gasoline, milk and…

## The Blue Marble

Wednesday, April 22nd, 2015, is Earth Day. Use this activity to demonstrate the various mappings of our 3-d Earth to a 2-d piece of paper. Students compare maps with this famous photo and check to see which characteristics are maintained and…

## Mom’s matzo ball soup

Passover begins this year on Friday evening, April 22nd, 2016, with a Passover seder dinner. Passover is one of the three high holidays in the Jewish calendar and celebrates the Exodus of Jews from slavery in Egypt. Let your students…

## Pizza party

In this activity students decide how to divide 2 pizzas amongst 6 adults and 3 pizzas amongst 8 kids.  Fractional pizza parts need to be drawn and considerations discussed about which fractions are greater. Students interpret a fraction as division…

## Blue river

Because the Cubs just won the World Series, the plumbers have died the river blue. During the St. Patrick’s Day parade in Chicago, the local plumbers union dyes the Chicago River emerald green. Students learn what PPM (parts per million)…

## Shamrock Shake

For Saint Patrick’s Day add a little nutrition math to your celebration.  In this post we look at calories, carbohydrates, sugars, fats, and proteins to decide what would be left for our day’s meal allotment after we had lunch and…

## Olympic reflection

After the games Thomas Ulsrud, Norwegian curler;  Eun-Ryung Sung, South Korean single luge  Dachhiri-Sherpa, Nepalese cross-country;  Jason Brown, U.S.figure skating The 2014 Winter Olympics have concluded.  Which country had the most successful olympics?  Three students can’t agree.  Have your students…

## Too early in the day for so many choices

Dunkin Donuts is promoting variety in their mixtures of hot chocolate.  Let your students try to figure out how many ways they can create their drink as they calculate the number of combinations possible in our story of stopping for…

## Highest grossing movies

Let your students develop their own ideas about compounded percent change while they have the opportunity to speak about the upcoming Academy Awards show. Worldwide box office income is compared for the top ten grossing movies of all time. Is…

## Curling

Friction, score-keeping, trajectory and weirdness are the main concepts in this activity.  Curling is not a well-understood sport but the science and strategy are easily understood and enjoyed. Let your students watch this video to get a feel for the…

## Where have all the flowers … come from?

Tuesday, February 14, 2017, is Valentine’s Day.  Start the “love hoopla” with this graphic on where all of the flowers come from.  This is part of the graphic from http://visual.ly/valentines-day-facts What fraction of these roses are shaded red?  The red ones…

## Scoring Olympic ski jumping

The scoring rubric for each of the Olympic events is intended to eliminate the possibility of scoring bias from the judges.  Let your students learn more about the scoring of one event and decide whether it seems fair or not.…

## The winter Olympics torch trip

Olympic torches are being carried to the deepest lake, the highest European mountain, into space, and around the host country to bring the Olympic flame to Sochi on February 7, 2014. In this activity, students can witness the Torchs’ trip…

## Asian giant hornets

Vespa mandarinia In AnKang, China in Shaanxi province, giant hornets have injured and killed scores of people.  Government officials are now trying to eradicate these insect’s hives and have destroyed about  4,500 nests so far.  The Asian giant hornet is the…

## Nobel prize in physics 2013

François Englert and Peter W. Higgs François Englert and Peter W. Higgs were jointly awarded the Nobel Prize in Physics 2013 for the theory of how particles acquire mass. In 1964, they proposed the theory independently of each other. In 2012,…