On Veterans Day we honor the men and women that have served in the Armed Forces of the United States. As of the the 2010 Census, there are 18.8 million living veterans. We found these maps that show where veterans…

Monday, September 23, 2019 at 7:50 UTC (which is the same as 3:50 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 travel through the…

Brian and his son were doing some shopping when he found this shoe. Egad! Could that be someone’s real shoe? In this activity student need to use a shoe size chart, patterns or linear modeling to try to figure out…

This day is known for pranks and puzzles. Try one of these on April Fools Day. Ask students to analyze where I made my mistake. PerplexingProblem.pdf For members we have solutions. PerplexingProblem-solution.pdf CCSS: MP1,…

Presidents Day is also about car sales. Should you buy a hybrid car or an electric car to save money? What about the environmental considerations? Students create equations for finding the break-even points of these vehicles by mileage and years…

Sunday evening, December 2nd, is the first night of Hanukkah this year. I think it was much later in December last year. Why isn’t it always on the same date? Students look at the Hebrew calendar and appreciate the incredible…

In December soccer teams with the strongest world rankings were chosen to play in the once-every-4-years World Cup. The World Cup competition has just begun and will continue through July 15th. The team rankings are calculated in a pretty complex…

What’s your guess? How fast are the number of daylight hours changing each day? Will the changes be dramatic or subtle? Students make guesses; compute how long, on average, the change in daylight hours should be; play with a cool…

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 on college costs in…

We hear nightly about who won delegates in state elections. But different states have different numbers of delegates. How is that figured out? Is it fair? The activity: Delegates.pdf Here’s a calendar of the nomination process: ElectionCalendar.pdf

In order to cook Paella (a delicious Spanish rice dish) I needed to buy Saffron spice. It was hugely expensive. So, I’ve decided to start a business of growing saffron and becoming immensely wealthy.

World Cup ranking – Students explore the ranking formulated from each team’s previous 4 years of play in their geographical divisions. The formula is complex and weighted. Is it fair? 5.OA, 5.NBT, 5.NF.B, 6.NS.B, 6.EE, 6.SP, 7.EE, 8.F, 8.SP, HSA World…

My friend from Boston created this list of cities that had won championships (in the last 10 years) in the four major national leagues. What does this list make you wonder? Which city has the best teams? How do you…

Here are some pictures from a recent snowfall at my house. How Much Snow Did I Get? Have students make an estimate. Ask them for a guess that is probably a little too low and one that is probably too…