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 ...
Ratio and Proportion
Genres
Grade
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 ...
President's Pay for Presidents' Day
You can't run for President now, but heck, 2036 is right around the corner.
Being President of the United States will be quite an accomplishment and a ton of work. But, how...
Bowling Deals
Is there a general way to figure how much its going to cost you (and your friends) to go bowling? Should you pay per game? Or bowl per hour? Don't forget that you'll need to rent sho...
Cost of hosting Olympic games
Hosting the Olympics sure does cost a lot. Why is that? How much money is $5 billion dollars? What is a cost overrun? Why would a country want to spend that much money to host and Olympic Game...
Immigration numbers
Here's an opportunity to work with calculating percents and the percent changes in the U.S. immigrant population. Students can reflect on what those changes demonstrate.
Start your class with this ...
Will the new iPhone sales be huge?
Apple just announced their new, 10th anniversary, iPhones, the iPhone 8 and the iPhone X. These phones will soon be in stores, the iPhone 8 comes out on September 22, 2017. The iPhone X is ava...
Total solar eclipse - apparent sizes
Where will the eclipse be seen? What if you are not in the path of totality? Total solar eclipse? What is apparent size? How can the moon seem to cover the sun complete...
Giant iceberg breaks off from Antarctica
The crack in Antarctica's Larson C ice shelf has been growing for years. Has the speed of the rift's growth stayed about the same? increased? decreased? Do the math and discuss the...
Measuring sea level
What does this gizmo do?
We've given students a diagram of what the interior of this mechanism contains and asked them to try to decide what its purpose must be.
Then we've...