What does looking down at your electronic device do to your breathing? To your muscles? To your spine curvature? To your pain? It can lead to a condition called Text Neck. To learn more about Text Neck and to kick this…

# Geometry

# Kilauea’s lava flow

The volcano, Kilauea, on the Big Island of Hawaii, has been active and erupting since 2008. There are two lava flows at present and one is now approaching homes on the Big Island. This is another example of natural events…

# Making a ghost costume

I’m going to make a costume pattern to sell. People can buy my plan and make awesome, long, full, scary, ghost costumes. This scheme will be so simple. Perhaps I’ll get rich! In this activity young students can reason about…

# How long will it take you to trick or treat?

It’s Halloween and this is your neighborhood. How long will it take you to trick or treat at every house in your neighborhood? Possible conversation with students: How long will it take you to get from house to house? You…

# How large a TV should I get?

This is a great looking room, but do you see what is wrong with this picture? Whether you are in middle school or high school, someday you are going to be moving out and you might need to select the…

# MAVEN arrives at Mars

Recently the MAVEN spacecraft (Mars Atmosphere and Volatile Evolution Mission) that was launched on November 18, 2013 reached Mars and attained an elongated orbit around the planet. How does someone figure out how to do that?

# Wheel of Theodorus

Bring a little art into your math class as you begin to use the Pythagorean theorem and your students first meet irrational numbers.

# Pizza Deals

Check out the new Flatizza from Subway. If the slice of pizza is from an 18-inch pizza cut into eight pieces, which deal is better when comparing area of pizza and cost? How does the area of a square pizza…

# The growth of Godzilla

Image from Kris Holt: http://www.policymic.com/articles/76357/the-scary-way-godzilla-has-evolved-through-the-years-in-one-chart The new Godzilla movie is out at theaters. His first appearance was in 1954 when he was created in Japan and crushed Tokyo. He appears to have grown. Do the film-makers have him growing appropriately? Lets…

# The Blue Marble

Wednesday, April 22nd, 2015, is Earth Day. Use this activity to demonstrate the various mappings of our 3-d Earth to a 2-d piece of paper. Students compare maps with this famous photo and check to see which characteristics are maintained and…

# Pizza party

In this activity students decide how to divide 2 pizzas amongst 6 adults and 3 pizzas amongst 8 kids. Fractional pizza parts need to be drawn and considerations discussed about which fractions are greater. Students interpret a fraction as division…

# Curling

Friction, score-keeping, trajectory and weirdness are the main concepts in this activity. Curling is not a well-understood sport but the science and strategy are easily understood and enjoyed. Let your students watch this video to get a feel for the…

# 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 21…

# How is the Olympic torch lit?

How is she doing that? Describe what you see. Our animation is simpler than trying to demonstrate the reflections of a parabolic mirror. Let your students study the sunlight reflections and hypothesize why the focus of the…

# Scoring Olympic ski jumping

The scoring rubric for each of the Olympic events is intended to eliminate the possibility of scoring bias from the judges. Let your students learn more about the scoring of one event and decide whether it seems fair or not.…