Author Archive for Brian and Leslie

Glowing rectangles

People spend lots of time staring at their screens (glowing rectangles).  Kids spend hours each day using their cell phones, computers, tablets, television and more.  Use that interest to motivate your student’s analysis of screen ratios and what proportions they…

Oreo Stuffiness

There is yet another Oreo… ABC Breaking News This activity builds off the work that Dan Anderson’s math class revealed about Original Oreos and Double Stuff Oreos. Students begin by working with the weight of just the Oreo wafer and…

In the Cloud

I want to find a way to keep my photos, documents, videos and music in a place that is safer than on my computer.  If my Macbook Air melts, where can I keep my irreplaceable files so that they aren’t…

Free Flights?

This can’t be right!  If my flight cost $200 and I stayed for 10 days it would be free.  Right?  You can kick off this activity by asking students to think about where in the world they would love to travel…

Jock tax

Great professional athletes make a lot of money. In November slugger Giancarlo Stanton signed a thirteen year contract for over $325 million with the Miami Marlins!  Did you know that professional athletes have to pay an amazing amount of federal, state,…

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…

Doubling your money

My friend and I were arguing about how long it would take me to double my investment amounts.  How will your students figure this out?  Are there any tricks?  Explore investing and exponential growth as your students discover “The Rule…

World Cup draw

This is part II of our reflections on the World Cup games.  Part I, World Cup rankings, explained and let students practice with the formula and weighting that is used to establish each country’s team rank. This second activity deals with…

Cost of light bulbs – updated!

Finally updated! There’s a lot of misinformation out there about the cost to consumers of CFL and LED bulbs and the savings in energy and money that could be realized. Let your students “do the math” and realize some of the…

Moneymaking holiday movies

Which movie do you think is the highest grossing holiday movie of all time (click on the movie to see its trailer)? How the Grinch Stole Christmas,  Elf,  The Santa Clause  or  The Polar Express Students analyze holiday movie data. They…

Amazing LEGO Fireman

At the Toys R Us store, I saw an amazing LEGO creation.  He was a life-sized LEGO fireman with a walkie-talkie, an oxygen tank and even an oxygen tank gauge.  He must have taken a long time to build. Let…

Best Sports City

My friend from Boston created this list of cities that had won championships (in the last 10 years) in the four major national leagues. What does this list make you wonder? Which city has the best teams?  How do you…

~~~ Scary costumes ~~~

Every year Americans spend lots of money on Halloween and Halloween costumes. Use our updated data on Halloween spending in America to engage your students in an analysis of the ratios of population, participation, and money spent in honor of October…

U. S. Open Tennis Tournament

The U.S. Open is about to get underway in New York City.  It is possibly the biggest tennis tournament in the world. We’ve updated our numbers and focused on the prize money.  As students ponder the amounts for various wins,…