Tag: 7.EE

The odds of horse race betting

Rich Strike surprised everyone at the Kentucky Derby horse race in early May by moving from 18th place at the half-way mark (out of 20 horses) to winning the race. Churchill Downs, the track in Kentucky where the race took place, paid out $81 for every dollar that was bet for Rich Strike to win.  How do they figure that?

Comedian

What do you think this activity might be about? What do you wonder? How much would you pay for this piece of art? How much profit is involved in this sale?

April 15th happenings

We have 6 April 15th activities. The Boston Marathon, Where your tax money goes, Jackie Robinson, and Paul Revere’s ride.

What is my best gasoline option?

Should I pay the membership fee and get BJ’s gasoline?  Should I just buy the cheaper gas at Sheetze? Students figure out the best deals with a membership fee, a loyalty credit card, or just the cheapest gas around. They create linear equations and find out for which amounts of gas would cost differences be the greatest and at what amount of gas would their costs be the same. And more …

The LUGE

This is one of the fastest Olympic sports. Lugers, on tiny sleds, zoom down a solid ice track at fantastic speeds, hold their bodies in an aerodynamically optimized position while fighting extreme G-force, and use only a helmet as their…

Bowl by the hour or the game?

Students consider the posted pricing of this bowling alley. What must they consider when choosing how to pay? What do you expect will be the best deal? How do you know?

Will one roll be enough?

Students can use the man or the basket as a reference as they try to approximate the size of these gifts and how much wrapping paper will actually be needed. Approximation, surface area, reasoning explanation, and diagraming! An X-box is…

Holiday shipping

These two companies carry a lot of our packages. What can you tell about them by the numbers? Does delivering a little percent late really equal to not many packages late?

Wind chill

Students use the National Weather System chart to gauge wind chill, examine the patterns that correlate increasing wind and/or decreasing temperatures, use wind chill numbers to estimate possible wind and temperature factors, and generally become familiar with this sort of interpolation and calculation. There’s a great high school extention that uses fractional exponents and logs to solve.

Shopping season already!

We used to see holiday sales right after Thanksgiving but, surprisingly, holiday shopping has already begun. Sales are advertised everywhere.  Students will be able to add some understanding and analysis to those shopping trips after calculating savings in dollars and…

Federal debt and deficit – What are they?

What’s the big deal with our national debt?  Do we actually borrow money to cover our debt?  If we do, imagine the interest charges? Help your students (and their families) understand the meaning and repercussions of too much debt. The…

Monarch’s are flying south again

In mid-August and early September, the Monarch butterflies begin their annual migration south to more moderate climates to hibernate and overwinter.  It is an incredibly long migration and fascinating to observe.  But, the population data on the Monarchs has seriously…

Steepness and fall hiking

Combine colorful and cool fall hiking with a little mathematics about percent grade change. What is a steep grade? Why is it in percent? How does grade change relate to slope?