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An ounce of cola
An ounce of cola

Which is more expensive; gasoline? milk? or cola? Students calculate the per ounce cost of each of these liquids in a story about a man doing errands. After...

Number Sense Math and Food Grades 4–6
The Blue Marble
The Blue Marble

April 22nd 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...

Geometry Math and Science Grades 5–HS
Mom's matzo ball soup
Mom's matzo ball soup

Passover is one of the three high holidays in the Jewish calendar and celebrates the Exodus of Jews from slavery in Egypt. Let your students review fractions in...

Number Sense Math and Food Grades 2–5
Shamrock Shake
Shamrock Shake

For Saint Patrick's Day add a little nutrition math to your celebration. In this post we look at calories, carbohydrates, sugars, fats, and proteins to decide what would...

Number Sense Math and Science Grades 4–6
Scoring Olympic ski jumping
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...

Number Sense Geometry Grades 4–HS
Which TV is the Best Deal?
Which TV is the Best Deal?

Check out the TVs. All have essentially the same features, only the size of the screen varies. Which TV do you think is the best deal? Explore area...

Number Sense Geometry Grades 3–6
HDTV Surprise!
HDTV Surprise!

How were your holidays? Your school vacation? Mine was good. I surprised my family with this HDTV, which I wrapped and hung on our wall. The size of...

Number Sense Geometry Grades 6–HS
California wildfire
California wildfire

Wildfires are burning in the Sierra Nevada Mountains near Yosemite National Park. In this activity we ask students to examine various maps of this California region, calculate distances...

Number Sense Geometry Grades 4–7
Crop circles
Crop circles

In the travel section of our newspaper this week, Wiltshire, England was a recommended destination to see Stonehendge and crop circles ........... crop circles? Many of the crop...

Algebra Geometry Grades 4–7
Methane math
Methane math

Updated! Carbon dioxide and methane are our two most prevalent human-contributed greenhouse gases. This holstein cow is one of many huge contributors to our methane production. Let students...

Algebra Number Sense Grades 5–HS
My teacher says this stream is parabolic.  Is he correct?
My teacher says this stream is parabolic. Is he correct?

Instead of asking students to just believe what you've said, why not ask them to verify your assertions? Students plot the points of the stream, perhaps map them...

Algebra Number Sense Grades 7–HS
Father's Day blueberry surprise
Father's Day blueberry surprise

Father's Day is coming up, and there is still time to have a tiny fraction review in the guise of celebrating Father's Day. This is a short activity...

Number Sense Math and Food Grades 3–6