# Category: Algebra

## Some of our activities that are good for at-home learning

We’ve got hundreds of great activities that demonstrate how math happens all around us.  Let your student choose an activity that interests him/her and enjoy the discoveries.

## Is there much of a difference between 99.9% or 99.999%?

Use our present need for cleanliness to engage your students. Does it really matter whether you kill 99.9% of the bacteria or 99.999% of the germs? In this 3-act activity we’ve asked students to consider whether these claims about these…

## The R-naught number of the coronavirus

We’re still learning about the coronavirus and its ability to and tendencies toward infection and spread. Students learn about the R-naught number which is a measure of infectious growth. Real-world mathematics!

## It’s time to gear up for Pi Day

8 activities to help celebrate π in your school and in your math class. 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.

## Which gasoline is the cheapest?

A comparison of gasoline in Greece, priced at Euros per liter, and gas in Massachusetts at dollars per gallon. Price and liquid volume conversion using unit fractions.

## Iditarod – The Last Great Race

The Iditarod Dog Sled Race will begin this year on Saturday, March 7th in Anchorage, Alaska. It is often called The Last Great Race on Earth because it is so long and grueling. Students do some rate, distance, and hardship comparisons to decide…

## Mardi Gras or Fat Tuesday

Students get a chance to examine the monetary and environmental cost of this bead exuberance with our unit pricing and recycling activity.

## Valentine’s Day + NBA All-Star Voting + Presidents’ Day

14 Activities to choose from for Presidents’ Day, NBA All-Star voting, and Valentine’s Day. What a week!

## Movies and the upcoming Oscars

Compounded percent change; central tendencies; the weight of Rapunzel’s 70 feet of hair; Godzilla’s height by comparison; how to measure the profitability of a movie series; most appropriate graphical representations; line of best fit; and more …

## Super Bowl and Ground Hog day (9 activities)

+ Even more NFL math! Super Bowl ads and scientific notation  Updated! – On Monday, when the Super Bowl is over and all of the ads have been seen, use this scientific notation activity to involve math students in the talk of…

## Typical Super Bowl Scores

Updated! In this activity students study historical Super Bowl data to reflect on average (mean, median, and mode), losing scores, winning scores, and range of scores. They are asked to judge which of these central measurements seem the most meaningful and explain…

What will a 30-second Super Bowl ad cost this year? Next year? In the future? How would you describe this rise in cost?

## Lunar New Year 2020 – Year of the Rat

Year of the Metal Rat Lunar New Year begins on Saturday, January 25th. This will be the year of the Metal Rat.  The year name is a combination of 10 Heavenly Stems and 12 Earthly Branches creating a sequence of…

## How steep is this treadmill?

In this very short activity, students get a memorable way to visualize a zero slope and an undefined slope.

## It’s Girl Scout cookie time again!

Totally new activity! Let your students talk about their favorite Girl Scout cookies as they figure out what the local GS chapter really earns from these sales.  Use this old graphic (where a box only costs \$4.00) to figure out…