How many gumballs are there?
Gumball Machine Problem from Brian Marks on Vimeo
This problem is a little puzzle to get your students thinking, estimating, and calculating. We've given you a pdf file w...
Number Sense
Genres
Grade
What is Artemis 1 and when will it launch?
Credit: (NASA/Joel Kowsky)
50 years ago we landed on the moon. We've established a space station and flown astronauts and guests to live there. Private industries have created reusable ...
How big of a crepe can you make?
At Costco you can buy this huge tub of nutella. It contains nearly 7 pounds of chocolaty-hazelnut spread.
We use nutella to make banana/nutella crepes. How long will that tub last u...
Steepness and fall hiking
Fall is a beautiful time of year for hiking. Many students will be walking in the woods and mountains to enjoy the colorful leaves and the cool weather outside. Let them combine what they ...
That's a big tomato!
These Aussi tomatoes (the tomato on the left of all of the tomatoes) are huge.
How much do you guess one weighs? Can you figure it out?
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...
2 Hiking Activities
How much food do you need to carry to hike the Appalacian Trail?
The AT is a hiking trail that begins in Georgia and ends on Mount Katadin, Maine. Fall is a beautiful time to be outdoors or on ...
Can you show that the Pythagorean Theorem works?
Use this activity to help your students work through the meaning of the Pythagorean theorem. Pythagorean theorem experiences are often skill and drill work with contrived right triangle problem...
String design, ellipses, and orbital mechanics
Here's a different and somewhat artistic way to encourage understanding of a conic section. Participants physically build an ellipse by choosing two foci and sketching the fi...
Tiny vacuum with a huge reach
From the vacuum description and advertisement in the PDF, how long do you think its cord must be?
Thanks to Brian Shoemaker, Newton, MA teacher, for the idea and pictures.