# Category: Number Sense

## Is the Electoral College unfair?

Show your students this really cute segment comparing how the Electoral College functions in our elections to what students think is fair and just. From the New York Times, Electoral College 101. After showing the video consider asking your students what the grouping…

## Electoral College vs the Popular vote

Click the map to create your own at 270toWin.com Let your students see how votes really count with our activity on the Electoral College.  Can someone win the popular vote in the Presidential election and still not become President of…

## Collecting the most candy!

Use your student’s Halloween enthusiasm to do a study on volumes.  We’ve created an activity that asks students to calculate the volume of candy containers that are silly and intriguing.  Skip the cone and the sphere to make this activity…

## Are these really 70% off?

We ran into this sale online. Is that advertisement correct?  Do they just want us to believe their math and not question what is really 70% off?  Is everything or anything really 70% off?

## Steepness and fall hiking

Fall is a beautiful time of year for hiking. Many students will be walking in the woods and mountains to enjoy the colorful leaves and the cool weather outside.  Let them combine what they are doing with their families and…

## Pascal’s Triangle coloring and Probability

Working with Pascal’s Triangle offers some interesting and varied mathematics.  We love to color and the end results are prettier than most math homeworks.  Here is the second of 3 activities using Pascal’s coloring. Pascal’s Triangle and Probability – This activity…

## Another year of Never Ending Pasta

On September 15, 2016, Olive Garden again offered a \$100 pass for never-ending pasta, bread sticks, salad and coca cola soft drinks.  The 21,000 patrons who quickly (in less than a minute) bought all of the passes will be entitled…

## Extra Point or 2-Point Conversion?

In 2015 the NFL changed the extra point kick distance to 33 yards and now teams have a tough decision to make, go for one or two points?  The one point extra point is no longer a given with a…

## Big Aussie tomato

These Aussi tomatoes (the tomato on the left of all of the tomatoes) are huge.  How much do you guess one weighs? Can you figure it out?

## When organizing data is confusing? Venn diagrams for Rio?

There must be a lot of Olympians who haven’t brought home medals.  Probably most of the athletes that went to Rio didn’t win anything.  We couldn’t find any data about this.  Can you deduce it? In this activity students try to…

## August meteor showers

Conditions will be favorable for excellent views of the Perseids meteor showers in early to mid-August.  Let students read charts, analyze data, work with percent of moon visibility at each phase, and understand apparent magnitude in the night sky with…

## Which of the Olympic sports do you want to watch?

Develop some understanding of the many Olympic sports and their various judging requirements.  Should the Olympics only include performances that can be objectively measured?

## Monster cake

Jodie Berman, a high school math teacher in Chicago, loves mathematics and loves to cook.  We’ve created an activity based on her Monster Cake (composed of everything that Cookie Monster loves) from her blog Binomial Baker.   Students find the surface…

## Pokémon GO! I should have invested

Pokémon GO is all the rage.  News reports show people glued to their smart phones as they travel to nearby landmarks where virtual critters appear and need to be caught by throwing Pokémon Balls with a phone swipe. Well, at least…

## 10 Million nematodes

Grubs are killing my grass.  I don’t want to put poison into the ground.  What can I do? There are tiny roundworms called beneficial nematodes. They can kill destructive soil pests in your garden and lawn.  They are tiny worms that…