Algebra

These posts help students see patterns and relationships.

Wow! Only 10 cents!

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

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…

The spread of Lyme disease

With the start of summer and wonderful outdoor activities, it might be good to examine the growth of Lyme disease occurrences in the United States.  The Center for Disease Control and Prevention (CDC)  has a wonderful map that you can…

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,…

Can you create a fireworks display on your calculator?

Let your students experiment with their graphing calculators to create a nice 4th of July display?  We’ve written a brief activity that questions students about manipulating parabolas, adjusting their calculator windows, and helping them celebrate the Fourth. Or consider using Desmos or Geogebra to create…

Dog years

My dog, Jorge, has just turned 10 years old.  He seems like a puppy to me but I wonder how old he is when compared to a human’s age.  He’s definitely not 70 or is he?  Hmmmmmm … Read tables…

What’s with the plovers?

Cute little birds.  Piping plovers are presently nesting on beaches along the Atlantic coast. Consequently beaches are often roped-off or closed to protect their nests and chicks.  Is this conservation working?  What should the numbers be like after so many…

The longest day

On Sunday, June 21st, at 12:39 pm EST, the Earth’s North Pole will be tilted as far towards the Sun as it will ever be in the year.  This marks the longest day of the year and the summer solstice in…

Two ideas for Father’s Day

Blueberry Muffins is a short activity that asks students to change the amounts in a blueberry muffin recipe to multiples of and fractions of a ¼ cup measuring cup (multiplication and division with unit fractions).  fathers-day-muffins.pdf For members we have an…

Games with dice

Time to let students become naturally curious about probability.  In this activity students work in teams to record the frequency of rolled dice combinations. They observe the difference between experimental and theoretical outcomes and consider how sample size affects how close…

Is college affordable?

Widener Library, Harvard University Whether you or one of your siblings is going off to college next fall, it is useful to know how much colleges cost.  Not going to college this fall? No worries, we can use the information…

How Old Are You?

We usually give our ages in years, but that isn’t very precise is it?  In this activity students find their age in days, hours and minutes.  First students take two minutes to estimate their age in days, hours and minutes.…

What a week coming up!

June 3 – Start of the NHL Finals June 4 – NBA Finals Greatest NBA season ever June 5 – National Donut Day – How many Donuts is that? June 6 – Running of the Belmont Race – Triple Crown Possibilities Odds of Winning the…

Big Burger

In honor of International Hamburger Day (May 28, 2015), it’s time to treat your students to ratios, proportions, fractions and BIG BURGERS! In this activity students explore the ratio of the various ingredients in the world’s largest burger (pictured above &…