David Price, a 30-year old pitcher from Toronto’s Blue Jays, was hired with a 7 year contract to be the Red Sox’s new ace pitcher for $217 million dollars. That is the largest amount ever offered to a pitcher. But…

How do you calculate and justify which deal is a better savings? By dollars saved? By percent saved? By some other measure? The activity: WhichDealOffersMostValue.pdf CCSS: 4.OA, 4.NBT, 4.MD.A, 5.NBT, 6.RP, 6.EE, 7.RP, 7.EE.A

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 actually cost?

Start out this activity with: What do you notice? What do you wonder? How many inches of snow produced that pile? How much snow in volume is on top of the car? How much could that snow weigh? Students try to approximate…

Can you tell from its opening weekend how much Star Wars: The Force Awakens will do in the long run? How much will it make in theaters? This activity can be used anytime and is especially timely when there is a…

People spend lots of time staring at their screens (glowing rectangles). Kids spend hours each day using their cell phones, computers, tablets, television and more. Use that interest to motivate your student’s analysis of screen ratios and what proportions they…

There is yet another Oreo… ABC Breaking News 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 the Oreo wafer and…

I want to find a way to keep my photos, documents, videos and music in a place that is safer than on my computer. If my Macbook Air melts, where can I keep my irreplaceable files so that they aren’t…

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 in the world they would love to travel…

Great professional athletes make a lot of money. In November slugger Giancarlo Stanton signed a thirteen year contract for over $325 million with the Miami Marlins! Did you know that professional athletes have to pay an amazing amount of federal, state,…

The deflated ball controversy makes an interesting segue into negative number line understanding. A particular digital psi football gauge reads 0 when the ball is at a proper NFL inflation of 13 psi. Footballs inflated under 13 psi produce negative psi readings…

My friend and I were arguing about how long it would take me to double my investment amounts. How will your students figure this out? Are there any tricks? Explore investing and exponential growth as your students discover “The Rule…

This is part II of our reflections on the World Cup games. Part I, World Cup rankings, explained and let students practice with the formula and weighting that is used to establish each country’s team rank. This second activity deals with…

Finally 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 realize some of the…

Which movie do you think is the highest grossing holiday movie of all time (click on the movie to see its trailer)? How the Grinch Stole Christmas, Elf, The Santa Clause or The Polar Express Students analyze holiday movie data. They…