Will college be affordable?
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Algebra
Genres
Grade
Figuring planting dates
It's time to get ready to plant my garden again. But here in Boston we have to start our seeds indoors to give them a head start before we can put plants outside. How should I fi...
Which is the best deal?
How do you calculate and justify which deal is a better savings? By dollars saved? By percent saved? By some other measure? Looking at 4 different deals, students will need to...
How much do the movie tickets cost?
Ooops!
I was supposed to buy 4 adult and 2 children tickets, but I accidentally entered four children and two adults ... :)
Can you figure out how much a child's ticket and an adult ticket...
Who can play in this play area?
We visited a Chic-fil-A recently. We had a great meal and my son loved playing in the ...
Mark Zuckerberg and Priscilla Chan to give away 99% of their shares of Facebook
That sounds like an awful lot of their Facebook shares. They want to help create a better world for their daughter, Max.
I wonder if they will have enough left over to live on?
The...
How much have doughnuts changed?
Part of the Smithsonian's Sally L. Steinberg Collection of Doughnut Ephemera -- Click on the image to see it larger.
When you are working on volume in your class, you can use this activi...
How Much is a Tweet Worth?
These days it seems everyone is on social media. Are you? Famous athletes and entertainers are on social media and they can make a lot of money. In this activity students study how ...
Free Flights?
This can't be right! If my flight cost $200 and I stayed for 10 days it would be free. Right? You can kick off this activity by asking students to think about where ...
What's with the plovers?
Cute little birds. Piping plovers are nesting on beaches along the Atlantic coast. Consequently beaches are often roped-off or closed to protect their nests and chicks. Is this conservatio...