How fast is the World’s population growing? Will the world’s population size increase indefinitely? Are all countries’ populations increasing at the same rate? What are some of the factors affecting this growth?

We have 16 activities that you could use for Earth Day! Saturday, April 22nd is Earth Day. Help your students become activists for our planet? We have 16 activities that support recycling, conserving resources, awareness of climate change and protecting our planet.…

This day is known for pranks and puzzles. Try one of these 4 activities on April Fools Day. Ask students to analyze where I made my mistake PerplexingProblem.pdf For members we have solutions. PerplexingProblem-solution.pdf …

We have tons (well, 16) of activities to bring to your class in this last week before the holiday break. Movies, science, art, cooking, economics, weather and the logic of calendars. Enjoy!

Should you buy a hybrid or an electric car to save money and the planet? Students create equations for finding the break-even points of these vehicles by mileage and years of ownership. They then work with systems of equations to…

Try one of these 4 activities on April Fools Day. Where did that extra dollar go? Mystical Mathematical Mind Reader; perplexing missing square in the triangle; and Robert Kaplinsky’s foil prank.

Wikipedia had this schedule of events. We think that there is a lot of information missing and apparent in this graphic. What can you tell and what would you like to know?

Students work with the geodesic icosahedron of the Time’s Square Ball by slicing an icosahedron. How are properties valued according to their distance from GO in the game of Monopoly? Games with dice; puzzles; probabilities; and more.

Updated 2022! Hanukkah begins on Sunday, December 18th this year. Why is the date always different? Students look at the Hebrew calendar and appreciate the incredible mathematics involved in creating a calendar that aligns both the moon’s revolution about the…

Here are two very different maps about where Veterans live in the U.S. and which states have the largest density of Veterans citizens. What do these two maps make you wonder or realize? How can you explain their comparison?

Updated for 2021! Tuesday, September 22, 2021 at 19:21 UTC (which is the same as 3:21 am EST), will be the Autumnal Equinox. It is the time of year when the imaginary plane that passes through the Earth’s Equator would also…

In the board game, Monopoly, does a property’s distance from GO correlate to its rent when you land on it? Using Brian’s spread sheet (list of properties, distance from GO, rent and rent with properties), students create scatter plots. They…