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How should I cook my turkey?
How should I cook my turkey?

Should I oven bake it, deep fry it or barbecue and smoke it? When do I have to wake up to begin preparations? How long will the cooking...

Algebra Number Sense Grades 3–6
Operation Gratitude – Halloween candy buy back
Operation Gratitude – Halloween candy buy back

This is a great idea! Motivate kids to get rid of all of that candy for a good cause. Operation Gratitude and dentists are encouraging healthy eating, motivated...

Algebra Number Sense Grades 4–6
How long will it take you to trick-or-treat?
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...

Number Sense Geometry Grades 2–7
Louisiana
Louisiana

We recently watched the approach of Hurricane Barry and worried about the fate of Louisiana. After the devastation of Hurricane Katrina, what would another powerful hurricane do to...

Algebra Number Sense Grades 4–HS
Spiraling squares - compass and straight edge
Spiraling squares - compass and straight edge

Can you see the many spirals in this design? Students calculate the size of each increasing round of squares and consider what sort of spirals these must be....

Algebra Number Sense Grades 6–HS
Tornadoes 2019
Tornadoes 2019

Tornadoes have devastated the Midwest, U.S. in the last few days. Alabama, Texas, Louisiana, Oklahoma, Ohio, Missouri, Iowa, Nebraska and Mississippi have been brutally hit with these powerful...

Number Sense Math and Science Grades 5–HS
Can this possibly be True?
Can this possibly be True?

This activity is being updated =). Could this possibly be true? What is reasonable? How do you check? Do you believe everything that you hear or read? Do...

Number Sense Math and Science
V-o-r-t-e-x
V-o-r-t-e-x

Weather temp eratures have been extreme in the World lately. Australia is experiencing an unprecedented heat wave and the U.S. is experiencing a Polar Vortex. Let your students...

Number Sense Math and Science Grades 4–6
Huge diamond found in Canada
Huge diamond found in Canada

552-carat diamond found in Diavik Mine, Northwest Territories, Canada Can you tell just how big this gem is? Do you know how big a carat is? What would...

Number Sense Geometry Grades 4–HS
New Horizons spacecraft just flew by a really distant asteroid
New Horizons spacecraft just flew by a really distant asteroid

Brian May, the lead guitarist of the rock band, Queen, is also an astrophysicist and one of the science team collaborators of the New Horizons space program. The...

Algebra Number Sense Grades 4–HS
Fantasy Football
Fantasy Football

In the midst of another NFL season, we introduce students to Fantasy Football. Students first calculate football points given touchdowns, yardage gains and interceptions. They are then challenged...

Algebra Number Sense Grades 5–HS
Encouraging bats might be better than using bug repellant
Encouraging bats might be better than using bug repellant

Bats eat mosquitoes ... lots of mosquitoes. Students compare a bat's weight to how much he can consume in one night. They calculate how much they would need...

Math and Science Ratio and Proportion Grades 5–6