The new R-naught number
There's a number used to quantify how fast a virus will spread, the R-naught number. As the coronavirus spread though out the world, we saw how the threat of infection was measured and und...
Number Sense
Genres
Grade
Monopoly
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...
At least the days are getting longer
Algebra
Number Sense
Math and Science
Holidays and Annual Events
Current events
Ratio and Proportion
Data and probability
What's your guess? How fast are the number of daylight hours changing each day? Are the changes dramatic or subtle?
Students make guesses; compute how l...
December 21, 2020 - Great conjunction
Right now, just after sunset, in the southwest sky, you can check out the planets of Jupiter and Saturn as they get closer and closer to each other. They are millions of miles apart but they app...
How fast will my new puppy mature?
Dudley, born 11/10/2019
Dudley has just come to live with us. He is just a puppy and he is full of energy. He's settling in well even though this is only day 3 of him living with us.
T...
The Forever Roll
That's a big roll of toilet paper! Why would anyone need such a big roll of toilet paper? How does it compare to Charmin's other toilet paper products? If this roll lasts for...
How much should the 40-oz size cost?
We found this chalkboard menu at a coffee shop recently. The shop had prices for the 12-oz (small), 16-oz (medium) and 20-ounce (large) cappuccinos. And they will also make you 40-...
So just print some more money!
What's the big deal with our deficit?
Do we actually borrow money to cover our debt?
If we do, imagine the interest charges?
Help your students...
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...