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Greasing light poles
Greasing light poles

The Philadelphia police were being proactive about keeping their enthusiastic Eagles fans from being reckless as they celebrated their 2018 Super Bowl win. So, the police departments frosted...

Algebra Geometry Grades 5–HS
The Olympic Torch trip in South Korea
The Olympic Torch trip in South Korea

On October 24, 2017, the Olympic flame was captured on Mount Olympus, Greece. That flame lit one of this year's Olympic Torches and the Torch relay was begun...

Math and Social Studies Sports Grades 4–HS
Is this promo a good deal?
Is this promo a good deal?

McDonald's was offering an "Arch Card" special deal. If you bought an Arch Card for $100 you were entitled to a free BigMac or EggMcMuffin every week for...

Number Sense Math and Food Grades 4–6
Should I get the Big One?
Should I get the Big One?

Let your students decide if the BIG one is a fair deal. Which size will they get? Which size offers the most value? Make a guess, then do...

Algebra Math and Food Grades 6–7
BIG Snickers bar
BIG Snickers bar

Act 1 - Big question = How many times bigger than a regular Snickers bar is this? What info would you like to know? How are you going...

Algebra Geometry Grades 3–6
Total solar eclipse - apparent sizes
Total solar eclipse - apparent sizes

Where will the eclipse be seen? What if you are not in the path of totality? Total solar eclipse? What is apparent size? How can the moon seem...

Algebra Geometry High School
Giant iceberg breaks off from Antarctica
Giant iceberg breaks off from Antarctica

The crack in Antarctica's Larson C ice shelf has been growing for years (2017). Has the speed of the rift's growth stayed about the same? increased? decreased? Do...

Math and Science Current events Grades 5–HS
Drinks at the Fair
Drinks at the Fair

At the amusement park, our friend, Jason, was intrigued with this sign for drink deals. He and his family come often to the park and, during the summer...

Algebra Food Grades 6–HS
Fireworks on your calculator
Fireworks on your calculator

Let your students experiment with their graphing calculators to create a nice fireworks display? We've written a brief activity that questions students about manipulating parabolas, adjusting their calculator...

Algebra Geometry Grades 7–HS
Fidget spinners - fad or lasting trend?
Fidget spinners - fad or lasting trend?

Do you recognize what these are? Are you noticing students with these gadgets? Is this a forever toy or just the newest thing? Can you tell by looking...

Current events Data and probability Grades 5–HS
Proposed southern border wall
Proposed southern border wall

You have probably heard about the proposed border wall that may go up along the U.S./Mexico border. How much wall needs to be built? How much will that...

Number Sense Math and Social Studies Grades 4–6
A gorgeous, glittery card
A gorgeous, glittery card

Uh oh! How do you find the area of a heart? Get your students to help you calculate how many sequins you'll need to order for this class...

Number Sense Geometry Grades 2–7