Number Sense

2015 World Cup Cricket

The Cricket World Cup is being played now in Australia and New Zealand.  This is a complex game that seems to be played with enthusiasm and humor.  In this activity students learn about the game; watch a couple of videos…

Huge Key Lime pie

On a cold and snowy day in Boston, two chefs created a huge Key Lime pie to remind the frozen people of the Northeast how tasty and warm the Keys of Florida are. After you show this movie to your…

Which Sweet Hearts are the Best Deal?

 I have been doing a little shopping for Sweet Heart Candies. I came across these three deals online.  Which should I select?  In this activity students determine which package of Necco Sweet Heart Candies is the best deal.  Students are…

A parametric heart … with love

Valentine’s Day is a good excuse to explore parametric equations. First students figure the coordinates of this figure using trigonometric unit triangles. Then they simplify and accelerate this task with either a graphing calculator or with online software like Desmos…

Deflategate

The deflated ball controversy makes an interesting segue into negative number line understanding.  A particular digital psi football gauge reads 0 when the ball is at a proper NFL inflation of 13 psi.  Footballs inflated under 13 psi produce negative psi readings…

Cost of a gallon of gas

In 1950, one gallon of gasoline costs $0.27.  Today the prices are going down but are they as low as they were in 1950?  Or could $0.27 buy more in 1950? In this activity we begin to understand the relative…

Losing team in the playoffs, 2015

Hey, the playoffs are about to begin.  The best teams from the leagues compete to determine the champion. Must be some really great teams! But wait, the 2014-15 Carolina Panthers made the NFL playoffs by winning the NFC South with a…

Soda Santa

Soda Santa

Happy Holidays! This Soda Santa is made up entirely of 12-pack cans of Coca-Cola products. What questions do you have? Start out the activity by giving kids 30 seconds to look at the picture and have them take a quick…

How much does a Lego cost?

This is a three act task, with an activity guide.  Show students the act one video.  What questions do they have?  How much could the Star Wars kit cost?  Follow the  activity guide, find costs based on the cost of…

Done with the leaves … now for the snow

Brian has spent too much time analyzing his leaf raking. He has created an investigation that asks students to calculate how long it would take different numbers of rakers to finish cleaning his yard of leaves. Students see the inverse…

The V~o~r~t~e~x

Weather has been extreme in the U.S. lately.  Use this incredible media topic to engage your students in integer subtraction, analysis, understanding, practice and confidence building. CCSS: 7.NS.1, 7.NS.3, MP2

Black Friday deals

When shopping next Friday, students will be able to add some understanding and analysis to the trip after calculating savings in dollars and percents with this timely investigation.

Rush or Pass?

With only 16 games in an NFL regular season every game and every play is crucial.  Teams need to win each week or jobs are on the line. To win you have to score points.  Points translate to wins. So…

Delicious pumpkin pie

I make the best, best, really best pie. Every year more and more people come to our house on Thanksgiving morning for my famous pumpkin pie and a hike in the nearby woods.  This year 23 people have already accepted.…

How much should you spend on this sale?

This activity can be used in a large range of grade levels.  Your class can work on percents, linear equations or piecewise functions. Act One: We missed the semi-annual sale but we want to get ready for the next one.  Let’s…