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This activity has been updated (2026). See the new activity here: https://www.yummymath.com/post/light-bulb-cost-comparison/ There's a lot of misinformation out there about the cost to consumers of CFL and LED...
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...
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...
During the St. Patrick's Day parade in Chicago, the local plumbers union dyes the Chicago River emerald green. Students learn what PPM (parts per million) means and attempt...
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...
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...
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...
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...
François Englert and Peter W. Higgs François Englert and Peter W. Higgs were jointly awarded the Nobel Prize in Physics 2013 for the theory of how particles acquire...
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...
Clicking on the image will show it larger. I'm not very good at understanding how large my device capacities are and how big the files that I want...
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...