Category: Algebra

These posts help students see patterns and relationships.

Which car, hybrid or electric, should I buy?

Students create equations for finding the break-even points of hybrid and electric vehicles by mileage and years of ownership.  They work with systems of equations to find the number of years or number of miles where the cost of these cars are the same.

Will our U.S. flag change yet again?

How many stripes are in our present flag pictured above?  (The bottom right flag that has been in use since 1960.) How many stars? What do the numbers of stars and stripes represent? U.S. Congress is again considering whether to…

Man paid in 500 pounds of greasy pennies!

In this 3-act activity, students learn about the story, watch a PowerPoint presentation about the issue, and try to calculate the amount of money in this pile. Copper pennies, zinc pennies, metric to standard conversions, and more.

Spring and Easter posts

5 timely activities that help mark Spring and Easter. Dyeing eggs, approximating number of Peeps sold, counting backwards to find planting dates, reading a pie chart on candy sales, and solid or hollow giant chocolate bunny. Enjoy!

The Perfect Bracket

What are your chances of picking every game? How does the change from 64 to 65 to now, 68 teams in the field complicate things?  How many brackets would you need to fill out to pick every possibility?  How many reams of paper would you need to print all of those brackets?  Let’s do the math!   Also, check out the video below that explores your odds of picking all games in the tournament perfectly.

3/14 – Pi Day is almost here

We have 8 activities to help you celebrate π in your school and in your math class with activities that demonstrate how π was derived; visually show why π makes sense; show a surprising place where π is used; increase students ability to measure and long divide; applauds the talent of people who can memorize large strings of numbers; and lets students just have fun.

Dunkin’s Go2s

Simultaneous equations with a Dunkin Donuts’ sandwich deal. Do you have enough information to solve it?

8 cold and snowy activities

How much snow is that? – 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? Approximation, snow/water equivalent rates (SWE) 5.MD.C, 6.RP.A, 7.RP.A, 7.EE.B, 7.G, 7.EE.A Snowy…

At least the days are getting longer

What’s your guess?  How fast are the number of daylight hours changing each day?  Are the changes dramatic or subtle? Students make guesses; compute how long, on average, the change in daylight hours should be; and finally understand the variability in our year of daylight hours.

How should I spend my rewards?

For every dollar that you spend, you accumulate points.  You can cash them in for savings on groceries, apply them to your gasoline purchases, or even use them to give to a food kitchen. If you are going to use them for gasoline or groceries, which way gets you the best deal?

Lunar New Year 2021 – Year of the Ox

Celebrated by 1/4th of the world’s population, Lunar New Year begins on Friday, February 12th. This will be the year of the Metal Ox.  The year’s name is a combination of 10 Heavenly Stems and 12 Earthly Branches creating a…