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.
Algebra
Genres
Grade
Sadly, Jorge passed away yesterday.
He was a great dog! We wondered how old he was in human years?
Jorge has been part of YummyMath for a long time. Sadly, yesterday he died. We wondered how old he would ...
Microns and Masks
How big is one coronavirus? How big is a micron? How well do these masks protect against the virus? What can you observe about the size of particles mentioned? Why are we wearing masks?
Stock Market headlines - Biggest losses since 2008
Algebra
Number Sense
Math and Social Studies
Current events
Ratio and Proportion
Data and probability
This year the Dow Jones Industrial Average made headlines as it dropped in March and April.
The Dow is measured in points but this decline can also be measured in the percentage lost. W...
World record Snickers Bar
In late January, workers at the Mars Wrigley plant in Waco, Texas created this giant Snickers Bar. It won a spot in The Guinness Book of Records as the World's largest Snicker's Bar.
Wh...
What is with this chart?
A fellow teacher, Laura Deschaines, saw this chart on the news the other night. What do you notice? Does anything seem amiss? What should it look like?
For Adventurer members we...
Data remaining ... tricky
I checked my data usage for the month. What do you notice and wonder (see the activity)?
What could my data plan be?
How much have I used?
How much will...
Is there much of a difference between 99.9% or 99.999%?
Use our present need for cleanliness to engage your students.
Does it really matter whether you kill 99.9% of the bacteria or 99.999% of the germs?
In this activity, we'v...
Which gasoline is the cheapest?
When Brian traveled to Crete last summer with his wife and son on an Archaeological dig, buying gasoline for his small rental car got him wondering again.
He was pretty g...
Expensive Super Bowl ads
Updated again for 2022!
The teams are set. Don't you wonder what a Super Bowl ad will cost this year? Will the price for 30 seconds be more? stay the same? or drop? 2013 Doritos "Go...