Author Archive for Leslie

QR codes ???

Your students have probably seen these images around and might not know why they are becoming popular for smart phone scanning … and possibly dangerous.  Students figure out the number of permutations of symbols that are possible with these 2-d…

Everything Royal Wedding

Friday, April 29, 2011, at 11:00 a.m. will be the much talked about wedding of Brittain’s Prince William and Kate Middleton. Engage and inform your students in an investigation of percents, proportions, exchange rates, time zones and Royal memorabilia. everything-royal-wedding.doc      …

Video game console sales

Video games continue to be a hot seller and a must-have for millions of gamers around the world. The recent releases of the Xbox 360 Kinect and the Nintendo 3DS have been big sellers and will probably be the big…

Radiation amounts

This investigation will help you and your students to better understand the magnitude of normal, background radiation and the more serious radiation exposure that comes from nuclear accidents.  Students will gain a realistic perspective on the seriousness of any event.…

Japan’s earthquake and the Richter scale

Today an 8.9 magnitude earthquake hit Japan causing a 23-foot tsunami that is leaving a path of destruction throughout the Pacific. Keep your students involved in the world around them as you study the mathematics of the Richter scale and…

Unions and Collective bargaining

Protestors at the Wisconsin State House There is a confrontation going on in Wisconsin. Governor Scott Walker is trying to enact legislation that would limit bargaining rights for most public employees in that state … firefighters, teachers, police, child-care workers,…

Anthony versus Williams

Within a day of each other two of the NBA’s biggest stars were traded to NYC area teams, Carmelo Anthony to the Knicks and Deron Williams to the Nets. In this investigation we compare the stats and careers of the…

Federal deficit and debt in the news

National Debt Clock, Avenue of the Americas, New York City Congress has begun debating what should be included and what should be removed from the 2012 budget that President Obama submitted last week. The words debt and deficit are constantly…

Population pyramids of Egypt

Pyramids of Giza Egypt has been in the news lately as young people have demonstrated in Tahrir Square, demanded the resignation of President Hosni Mubarak, and begun the reorganization of their country’s government. News agencies have show population pyramids to…

Census is complete and Apportionment begins

The 2010 U. S. Census is complete and state reapportionment is about to begin. The process of distributing the 435 Representatives appropriately to each state is a mathematically fascinating event. Engage your students in the calculation of the apportionment so…

Welcome back to Cleveland Lebron

Lebron James left the Cleveland Cavaliers to play basketball for the Miami Heat and to play with his friends, Chris Bosh and Dwyane Wade. Lebron just made his return to the area he grew up in and where he started…

Rapunzel

Disney’s animated movie, Tangled, came out in 2010. We’ve shown students some of the Brothers Grimm’s original fairy tale along with giving them a glimpse at the physics involved in the animation of Rapunzel’s hair. Ratios are needed to estimate…

Cholera in Haiti

On January 12th of this year, there was a tremendous, 7.0 magnitude, earthquake in Haiti. Hundreds of thousands of people were killed or injured and a million people became homeless. Then on November 5th, Hurricane Thomas hit Haiti. Huge amounts…

Benoît Mandelbrot

        In October, 2010, Benoît Mandelbrot died in Cambridge, Massachusetts. To honor his life and work in fractals and natural recurrence, we’ve created an investigation that teaches students a little about Mandelbrot’s life, a little about the…