Algebra

These posts help students see patterns and relationships.

World Cup rankings

In December the soccer teams with the strongest world rankings were chosen to play in the once-every-4-years World Cup. The team rankings are calculated in a pretty complex manner. How are the 32 teams selected? Students can explore the ranking…

The growth of Godzilla

Image from Kris Holt: http://www.policymic.com/articles/76357/the-scary-way-godzilla-has-evolved-through-the-years-in-one-chart The new Godzilla movie is out at theaters.  His first appearance was in 1954 when he was created in Japan and crushed Tokyo.  He appears to have grown.  Do the film-makers have him growing appropriately?  Lets…

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…

Recent Earthquakes

Northern Chili and Los Angeles, California have experienced recent earthquakes.  These quakes are along the “Ring of Fire” where Earth underground plates often collide. The IRIS (Incorporated Research Institute of Seismology) Seismic Monitor will allow your class to visualize the most recent…

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)…

Cost of movie tickets over time

We’ve updated this activity and thought that we should mention it again as we approach the Academy Awards. In this investigation, Brian looks at the changes in movie ticket prices over the last 30 years. Using his scatter plot (or his data)…

The Ghost Whisperer

Let your students play this great game online at Ghost Whisperer Crystal Ball and Figure out why it works. Construct viable arguments Critique the work of others This activity can be used with any grade level elementary through high school.  Younger…

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…

How is the Olympic torch lit?

How is she doing that?        Describe what you see. Our animation is simpler than trying to demonstrate the reflections of a parabolic mirror.  Let your students study the sunlight reflections and hypothesize why the focus of the…

4th down

It’s 4th down.  Should you go for it?  Punt?  Kick a field goal?  Instead of using your gut, use research, data and math to make the right call … The graph below gives the recommended option for 4th down situations for…

~~~ 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…

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,…