Category: Number Sense

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…

Sweetheart candies

Here’s some more Valentine’s Day fun.  How many dollars worth of sweet hearts candies are sold each Valentine’s season?  What more could kids want than Sweetheart candies, problem solving, critical thinking, and number sense reasoning? Enjoy!

Have a heart

Clicking on the image above will show the heart larger in a new window. Canstruction® is an event hosted in more than 150 countries throughout the world to demonstrate “innovation, hunger relief  and collaboration”.  Canstruction has raised more than 40 million…

Chocolate heart-shaped raspberry cake

Students calculate base area or volume of cakes made from 2 cake pan sizes and observe how the volume of the cake changes with the increased pan size.  This is an activity intended to demonstrate that the volume increase is…

Super Bowl cheesy pretzel poppers

… A little more delicious work for the Super Bowl.  Students follow a recipe that involves “cutting the cheese” block, figuring how many servings, estimating how many times they need to multiply the recipe by to make enough pretzel bites, and…

Big Bucks

Giancarlo Stanton and Wayne Rooney signed big contracts recently, paying each of them millions.  Lets take a look at some of the world’s biggest sports contracts from the NBA, NHL, NFL, MLB and European Football (what Americans call soccer).  We often hear…

Civil rights marches, how do you count a crowd?

On October 16, 1995, perhaps a million black men gathered for the Million Man March on Washington.  This was 32 years after Martin Luther King, Jr. gave his historic “I have a dream” speech at the Lincoln Memorial to 250,000 civil…

Possible activities in honor of Martin Luther King, Jr

Time lines for life and work of Martin Luther King, Jr. – Two timelines that show the rate and spacing of progress. One timeline about events and accomplisments of Martin Luther King, Jr Second timeline about the progress made in America, so…

Home team advantage?

Even before your students check out the graphic below, ask them whether they think a game played at home gives their team an advantage.  If so, how much of an advantage?  Enjoy the discussion first.  Then show the graphic.

Is 2017 prime?

Every birthday I consider whether I’m in the prime of my life … like when I was 29 years old.  Will this new year be a prime year?  I hope so. Don’t use Google or Siri or whatever.  Just see…

It’s latke time

In my family it is traditional to eat latkes (Yiddish for potato pancakes) at this time of year.  They are fried in a lot of oil and salted generously.  My mom’s latkes were wonderful but they couldn’t have been good for…

Do I have enough wrapping paper?

I have to wrap this box. In this problem based activity students first guess and then try to calculate whether they will have enough paper to wrap this present without taping pieces of wrapping paper together. …with this wrapping paper …

What’s wrong with this picture?

We’ve gotten used to believing what we read or see advertised.  But sometimes the clerk doesn’t get the sales discount right or something seems a little off.  Let students ponder this store menu and see if they can figure out…