Act One: Take a look at the pic. What questions come to mind? Just before Thanksgiving there is an annual demonstration at the Winter Palace in the World Financial Center of New York City. Canstruction is a celebration of…

# Algebra

These posts help students see patterns and relationships.

# Going back to school

In this investigation students calculate the percentage of the U.S. population (current and historically) that are enrolled in K-12 schools. They are asked to draw conclusions from these variations. Finally, they use their calculations to predict the number of enrolled…

# 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…

# Should I buy the BIG one?

Let your students decide if the BIG one is a fair deal. Click on the pic to enlarge and post on the wall. Have kids a pick a sandwich. Which size will they get? Which size is a better deal?…

# 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…

# How many times bigger?

Listen to students initial thoughts as they wrestle through what “bigger” means … length? height? wheel-base? volume?

# 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…