Little Amal

With our world in so much turmoil and refugees trying to survive hardships by traveling away from their homes, the story of Little Amal is powerful and touching. Of course there is lots of math in creating an 11 foot tall puppet that can be controlled by 3 people and show fear, surprise, wonder, and generally the humanity of refugees.  Bring the story of Amal to your classroom with this timely art.

The activity: LittleAmal.pdf

Hurricanes, Typhoons, and Cyclones

Graphic from http://lagoon-inside.com

This week Hurricane Fiona caused major damage to Puerto Rico, the Dominican Republic and the Caribbean,

This is the season for increased cyclonic activity around the globe.  How are hurricanes, typhoons, and cyclones related?

There is a measurement called the Accumulated Cyclone Energy (ACE).  How is it measured? Are storms becoming more intense?  Did you know there is a formula for measuring the strength of storms and storm seasons?  Let's see if this formula for measuring the intensity of storms makes any sense?

The activity: typhoons-hurricanes-cyclones2022.pdf

How much caffeine are you consuming?

Did you know that there is an amount of caffeine that is too much for the growing brain of a teenager?  We did some research and have asked students to examine the sources of caffeine in their diets and calculate the number of servings that they actually consume.

The activity: Caffeine-amounts.pdf

How many gumballs are there?

Gumball Machine Problem from Brian Marks on Vimeo

This problem is a little puzzle to get your students thinking, estimating, and calculating. We've given you a pdf file with only a picture of the gumball machine to use for estimating.

  • How many gumballs are there?
  • At $0.25 per ball, how much will it cost me to buy them all?
  • How long will buying them all take?

Macy’s Star Rewards Points

Screen Shot 2014-10-04 at 2.41.19 PM

Wow! Check out this deal at Macy's.  For $25 I can join Macy's Star Rewards program.  I get 10% back in rewards for every dollar I spend.  Its pretty cool that Macy's gives part of that $25 to charity.  Should you do it?  It seems like free money (or clothes) just for shopping at Macy's.  Factoring in the $25 enrollment fee, how much do you need to spend at Macy's to come out ahead? For what total shopping dollar amounts is this a bad deal for the consumer?  What dollar amount must you spend to at least break even?  Can you write a rule that gives the dollars earned at Macy's after the $25 registration fee for any dollar amount of purchases?

Willy Makeit or Betty Wont

I have to go to the bathroom pretty badly. I have to admit that I have been holding it in for a while.  Finally!  I see a bathroom sign!  Wait ... it is in kilometers?  How far is that?  Should I run?

The activity: have-to-go.pdf