Category: Ratio and Proportion

Wanna rent a chaise lounge?

Brian went to Crete and took a picture of this sign. What do you suppose he’s going to ask next? Yep.  “How much will 6 loungers and 2 umbrellas cost?”  And more … Systems begin. rent-beach-stuff.pdf

S’mores

No joke. Saturday was National S’more Day.  Thanks to Maggie Hefferman, Newton, MA educator, for the idea of this post. To help you celebrate this strange new holiday, we’ve asked students to do a little math to help quantify…

Are original movies better than their sequels?

We’ve gathered some data on movie ratings and their sequels and asked students to analyze the data, decide on some analysis and debate (with their mathematical data) which are better … the original movies or their sequels. Students see what…

Louisiana

We recently watched the approach of Hurricane Barry and worried about the fate of Louisiana. After the devastation of Hurricane Katrina, what would another powerful hurricane do to this fragile state? What is it about Louisiana that causes so much…

All-you-can-eat ice cream … 10 cents!

All the ice cream that you can eat for only 10 cents!  Wow, that’s a great deal!  How great a deal was that? The history of the Dairy Queen franchise began with this ad in Illinois in 1938.  I know…

How can Nike give away so much great stuff?

Worldwide Nike supports many teams and athletes.  They design, manufacture, and supply gear for almost every sport imaginable. How much are those give-aways worth?  Is the company going to go broke? Probably not.  Nike is huge. In this activity we…

California earthquakes and the Richter Scale

After a July 4th 6.4 magnitude earthquake, California experienced 7.1 magnitude quake two days later. Many more quakes and aftershocks are expected. The IRIS (Incorporated Research Institute of Seismology) Seismic Monitor will allow your class to visualize the most recent quakes and their…

This must be a huge beach towel!

Act One: Check out this beach towel!  What do you wonder? What would you like to know? Miami artist, Misael Soto (pictured on the left below), created this giant art project to make a statement about people sharing territory at the beach.…

NHL Playoff games can sure last a long time!

Revised! We’re watching another Stanley Cup playoff now. Will there be any really long games during the playoffs? In 2013, a Stanley Cup playoff match between the Bruins and Blackhawks went into 3 overtimes. People stayed up way too late…

Tornadoes 2019

Tornadoes have devastated the Midwest, U.S. in the last few days. Alabama, Texas, Louisiana, Oklahoma, Ohio, Missouri, Iowa, Nebraska and Mississippi have been brutally hit with these powerful events. Involve your students in a better understanding of the ranking and…

NBA Finals, 2019

As the Raptors and the Warriors begin their NBA final games involve your students in some NBA analysis using graphical representations. In this activity students consider scatter plots, circle graphs, bar graphs, Venn Diagrams and the concept of mean. To…

Memorial Day, 2019

This Monday Americans will celebrate Memorial Day.  Who are we honoring?  How did the holiday come about?  Isn’t Memorial Day usually on May 30th? Students learn a little about the history of the holiday, analyze the possibilities and patterns for when…

Wow, everything must be free!

What happens when you take 50% off again after taking 50% off at first? Students examine this retailer trick of giving double discounts.  What happens to the price when you are given a double discount?  Could everything be free?

How much water should you be drinking?

As outdoor activities get into full swing and the temperatures rise, it might be a good time to look at hydration. A healthy requirement for fluids can’t really be the same for everyone.  Surely the amount of water that you…

Bring Mothers’ Day math to your class!

Mother’s Day by the numbers – Mother’s Day is right around the corner and this means big business for the greeting card and floral industries. Let your students practice averages, percents, and large numbers while they analyze the statistics on Mother’s…