Number Sense

What does 95% confidence in the poll results mean?

There were polls about who would win the Presidential election. Now there are polls about approval ratings for Congress and President Trump.  You can see the latest poll results here. I get so confused when polling results are reported.  What…

Fun and crazy things to do for April Fools day

We have two classic puzzles for your April 1st class starters. PerplexingOne.pdf      PerplexingTwo.pdf CCSS: MP.1, MP3,4.OA, 5.G, 8.EE, 8.SP For members we have solutions. PerplexingOne-solution.pdf     PerplexingTwo-solution.pdf Or you might baffle and amaze your students with our Ghost Whisperer lesson.…

Pascal coloring and modular math

This is the third and final activity in the Pascal’s Triangle series.  In this activity students again have the opportunity to color as they investigate Pascal’s triangle and the patterns that it shows.  The activity might be used first in…

Greatest March Madness program

Based on this data, which do you think is the greatest March Madness program ever? Once students decide their “best program ever” challenge them use a different criteria than they originally used. That is, ask them to think of another way…

March Madness – Does seeding really matter?

March Madness is the big 68 team college basketball tournament that takes over our TV viewing during the weekends of March. School and office friends are filling out brackets.  Engage your students in  percents as they get excited about March…

Saint Patrick’s Day, March 17th

Green, green river – They’re doing it again. In Chicago, the local plumbers union “dye” the Chicago River emerald green.  Students learn what PPM (parts per million) means and  attempt to figure out how much dye is used to sufficiently color…

The perfect bracket

Sunday night, March 12th, is Selection Sunday for the Men’s March Madness Tournament.  Monday night, March 13th is the selection night for the Women’s March Madness Tournament.  The March Madness bracket predictions can begin. What are your chances of picking…

Pi Day is coming!

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…

New baby giraffe

Willow weighed 125 pounds at birth and was 6 feet 1 inch tall.  She will grow to her adult height of around 14 feet tall in only four years! How big would you be if you grew at her rate…

Iditarod 2017

The Iditarod Dog Sled Race begins on Saturday, March 4th in Anchorage, Alaska. This long and grueling competition is called the Last Great Race on Earth. Students do some rate, distance, and hardship comparisons to decide if they agree that the…

Mardi gras – Fat Tuesday

Tuesday, February 28, 2017, will be the day before Ash Wednesday and the start of the season of Lent.  Mardi Gras is a last hoorah and is celebrated throughout the world with feasting, partying, and general indulgence.  In New Orleans…

Movies and the upcoming Oscars

Highest Grossing Movies – Let your students develop their own ideas about compounded percent change while they have the opportunity to speak about the upcoming Academy Awards show. Worldwide box office income is compared for the top ten grossing movies of all…

Will this be a leap year?

Will we have a 29th of February this year?  How can you tell? Students work with a flow chart to deduce what years are going to be leap years.  They learn about the exact measurement of a solar year and…