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Act I: This restaurant bill has the suggested tips, but they are smudged out. What should they be? Consider having students make a fast 5 to 10 -second...
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...
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...
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...
We visited a Chic-fil-A recently. We had a great meal and my son loved playing in the play area. While at the play area I noticed two different...
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...
What is your favorite sport? Wait, do I mean your favorite sport to play or your favorite sport to watch? Does it matter? Are your favorite to-watch sport...
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...
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 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...
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...
In this activity, students analyze and graph the numbers and decide if Facebook's growth in the first 20 years has been linear, exponential, meteoric, or something else. Will...