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Memorial Day 2026
Memorial Day is a US holiday observed on the last Monday in May. Who are we honoring? How did the holiday come about? Isn't Memorial Day usually on...
Number Sense
Holidays and Annual Events
Grades 5–8
Will this be an El Niño winter?
The Oceanic Niño Index (ONI) started to show changes to the Pacific Ocean surface temperatures in April and May of this year. Those temperatures are still rising which...
Number Sense
Math and Science
Grades 4–HS
March Equinox - big deal? ... and 5 more Spring activities
What's with the March Equinox? Does it really affect our lives? Is it just some astronomical occurrence? Students calculate the daylight hours at the March Equinox by time...
Algebra
Math and Science
Grades 3–7
Whole lot of cookies
This activity has been updated -- See the updated activity HERE
Algebra
Number Sense
Grades 3–5