Cost of light bulbs
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 consu...
Number Sense
Genres
Grade
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 with an equation generated b...
The Fiscal Cliff - sounds scary
We've used a graphic to help students understand what is meant by the Fiscal Cliff. Students will understand some of the terms and study the consequences of two upcoming scenarios.
The...
It sure is cold out ... or is it?
Students ponder the relationship between place latitudes and average January temperatures while they try to discover a correlation. Is this a linear or near linear relationship? … averaging, mis...
Geometry of Flooding
In 2010, March was so rainy that flooding was the topic of every newscast and many, many conversations. To this day, the March 2010 floods were described as “once-in-a-generation” river leve...