Ratio and Proportion

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\$10,000 a week or \$10 million all at once?

This activity is accessible to student elementary through high school with varying depth of study. Would you rather have \$10,000 a week or \$10 million all at once? What kinds of things do we nee...

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...

Oreo Stuffiness

There is yet another Oreo... This activity builds off the work that Dan Anderson's math class revealed about Original Oreos and Double Stuff Oreos. Students begin by working with the weight of just...

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 ...

How much should you spend on this sale?

This activity can be used in a large range of grade levels.  Your class can work on percents, linear equations or piecewise functions. Act One: We missed the semi-annual sale but we want to get ready...

Cost of light bulbs - updated!

There's a lot of misinformation out there about the cost to consumers of CFL and LED bulbs and the savings in energy and money that could be realized. Let your students "do the math" and realiz...

Rapunzel

Disney's animated movie, Tangled, came out in 2010. We've shown students some of the Brothers Grimm's original fairy tale along with giving them a glimpse at the physics involved in the animation of R...