# Author: Leslie

## Giant iceberg breaks off from Antarctica

The crack in Antarctica’s Larson C ice shelf has been growing for years.  Has the speed of the rift’s growth stayed about the same? increased? decreased?  Do the math and discuss the implications. The activity:  ice-sheet-rift.pdf

## Drinks at the Fair

At the amusement park, our friend, Jason, was intrigued with this sign for drink deals. He and his family come often to the park and, during the summer when it is hot, naturally drink a lot. Which is the best…

## Maybe we should encourage bats instead of bug repellent

Bats eat mosquitoes … lots of mosquitoes. Students compare a bat’s weight to how much he can consume in one night.  They calculate how much they would need to eat to consume a comparable proportion of food. We compare the…

## Jorge just turned 12. How old is he in human years?

My dog, Jorge, has just turned 12 years old.  He still seems like a puppy to me but I wonder how old he is when compared to a human’s age.  He’s definitely not like an 84 year old human (12…

## Fibonacci coloring

Lots of people enjoy coloring books. Evidently people who like to multitask can find a means of calming their energies and reach a peaceful place by simply coloring designs.  Coloring in these drawings allows you to relax and just create pretty…

Let your students experiment with their graphing calculators to create a nice fireworks display?  We’ve written a brief activity that questions students about manipulating parabolas, adjusting their calculator windows, and helping them celebrate whatever. Or consider using Desmos or Geogebra to create these fireworks. Enjoy! Or…

## Ideas for Father’s Day

Thank you Mother and Father for all of those diapers – Which is a better deal, cloth or disposable diapers?  How much did you cost your parents in diapers?  In the future how much could your kid’s diapers cost?   Help…

## Saving Water Bottles

In my grocery store they now have these new water bottle refilling stations. You can simply refill your own container with water instead of buying a six-pack of bottled water. Do you think that this is a good idea?  Are they…

## Opening weekend of Wonder Woman

Can you tell from its opening weekend how much the new movie, Wonder Woman, might earn in theaters?  This activity can be used anytime and is especially timely when there is a new blockbuster movie released.  We’ve left blank spaces…

## Tick time and Lyme disease

With the start of summer and wonderful outdoor activities, it might be good to examine the growth of Lyme disease occurrences in the United States.  The Center for Disease Control and Prevention (CDC) has published maps for all of the…

## Memorial Day 2017

This Monday Americans will celebrate Memorial Day.  Who are we honoring?  How did the holiday come about?  Isn’t Memorial Day usually on May 30th? Students learn a little about the history of the holiday, analyze the possibilities for when it is…

## Fidget spinners – fad or lasting trend?

Do you recognize what these are? Are you noticing students with these gadgets? Is this a forever toy or just the newest thing? Can you tell by looking at trend charts of Google searches how this phenomena will proceed?  Let’s…

## Triple Crown hopeful at the Preakness Stakes

This Saturday is the running of the Preakness Stakes Thoroughbred horse race in Baltimore, Maryland.  The Preakness is the second major race for 3-year old thoroughbreds to run in their effort to claim the Triple Crown of horse racing.  Always…

## Proposed southern border wall

You have probably heard about the proposed border wall that may go up along the U.S./Mexico border.  How much wall needs to be built? How much will that cost? What is that per mile? Per foot? What else could you…

## Mother’s Day activities

Mother’s Day by the numbers – Mother’s Day is right around the corner and this means big business for the greeting card and floral industries. Let your students practice averages, percents, and large numbers while they analyze the statistics on Mother’s…