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AQI - Air Quality Index
AQI - Air Quality Index

The AQI is a measurement of how much particulate matter, dangerous ozone, carbon monoxide, nitrogen dioxide and sulfur dioxide there is in the world's atmosphere at any one...

Number Sense Math and Science Grades 4–HS
It's tick time again ... and Lyme disease
It's tick time again ... and Lyme disease

With the start of summer and wonderful outdoor activities, it might be good to examine the growth of Lyme disease and to recognize its carrier, the deer tick....

Algebra Number Sense Grades 4–6
Does an NFL player's draft order mean a lot for the player?
Does an NFL player's draft order mean a lot for the player?

Updated! This Thursday, April 27 th , college football players will be awaiting knowing their futures in the NFL.Every spring, roughly 250 college football players are drafted by...

Algebra Sports Grades 5–HS
Shoprite's solar energy goals on the African continent
Shoprite's solar energy goals on the African continent

Shoprite is the largest supermarket chain in Africa. The company is presently engaged in increasing their use of solar power to harness the abundant natural resource of solar...

Algebra Geometry Grades 3–6
John Urschel, retired Baltimore Raven and Black mathematician
John Urschel, retired Baltimore Raven and Black mathematician

John Urschel is a young man with several seemingly disparate characteristics and talents. He is an athlete and a mathematician and he is a black man and a...

Number Sense Math and Social Studies Grades 2–HS
At least the days are getting longer
At least the days are getting longer

What's your guess? How fast are the number of daylight hours changing each day? Are the changes dramatic or subtle? Students make guesses; compute how long, on average,...

Algebra Number Sense Grades 4–7
Crazy basketball score
Crazy basketball score

Wow! Look at that score! There were some scoreboard malfunctions in this December 15, 2020, pre-season game. What might have been the final score if this game progressed...

Algebra Number Sense Grades 2–6
December 21, 2020 - Great conjunction
December 21, 2020 - Great conjunction

Right now, just after sunset, in the southwest sky, you can check out the planets of Jupiter and Saturn as they get closer and closer to each other....

Algebra Number Sense Grades 3–HS
Holiday soda displays
Holiday soda displays

The holidays are coming! We found these timely soda displays made up entirely of 12-pack of Coca-Cola products. What questions do you have? Start out the activity by...

Algebra Number Sense Grades 2–HS
Ravensburger huge puzzle
Ravensburger huge puzzle

 This puzzle is gorgeous and HUGE! Ravensburger says that if you spent 2 hours every day putting this puzzle together it would take you a year to...

Number Sense Geometry Grades 3–7
Candy deals
Candy deals

We found big mixed bags of candy at really good prices ... we think. Students are asked to decide which would be the best deal and the worst...

Number Sense Math and Food Grades 4–6
2 Hiking Activities
2 Hiking Activities

How much food do you need to carry to hike the Appalacian Trail? The AT is a hiking trail that begins in Georgia and ends on Mount Katadin,...

Algebra Number Sense Grades 5–HS