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Civil rights marches, how do you count a crowd?
Civil rights marches, how do you count a crowd?

On October 16, 1995, perhaps a million black men gathered for the Million Man March on Washington. This was 32 years after Martin Luther King, Jr. gave his...

Number Sense Geometry Grades 3–HS
It's latke time
It's latke time

In Leslie's family it is traditional to eat latkes (Yiddish for little potato pancakes) at this time of year. They are fried in a lot of oil and...

Number Sense Math and Food Grades 5–6
What's wrong with this picture?
What's wrong with this picture?

We've gotten used to believing what we read or see advertised. But sometimes the clerk doesn't get the sales discount right or something seems a little off. Let...

Number Sense Geometry Grades 5–6
Pick-a-brick wall at the Lego store
Pick-a-brick wall at the Lego store

There are walls at the Lego stores that are filled with individual Lego parts. You can fill a bucket and pick out exactly what you need. Use this...

Number Sense Geometry Grades 2–5
Shrinking Toblerone
Shrinking Toblerone

New York Times photo - Credit Darren Staples/Reuters They changed it. That is so not fair ... or is it? You can check out a video news story...

Number Sense Geometry Grades 4–HS
3 winners on the Price is Right - what are the chances?
3 winners on the Price is Right - what are the chances?

Act One: Show this clip of the Price is Right program. What questions do your students have? We were wondering what the chances are of 3 contestants in...

Algebra Number Sense Grades 6–HS
Cubs bury curse !
Cubs bury curse !

Wow! It's been a long time coming. The Chicago Cubs just won the World Series! The last time they won the World Series was in 1908 (For some...

Number Sense Sports Grades 3–7
Cheap-otle?
Cheap-otle?

mage from Chipotle. One of my favorite foods is a burrito. One of my favorite places to get a burrito is Chipotle . Their food is delicious and...

Number Sense Math and Social Studies Grades 4–7
Are these really 70% off?
Are these really 70% off?

We ran into this sale online. Is that advertisement correct? Do they just want us to believe their math and not question what is really 70% off? Is...

Algebra Number Sense Grade 6
Pascal's Triangle coloring and Probability
Pascal's Triangle coloring and Probability

Pascal's Triangle and Probability - This activity could be used to explore the probability of coin tossing results. When the combinations get too complicated to list, students can...

Algebra Number Sense Grades 6–HS
Another year of Never Ending Pasta (Updated)
Another year of Never Ending Pasta (Updated)

Updated – 2025/2026 Olive Garden again offered a $100 pass for never-ending pasta! The 21,000 patrons who quickly (in less than a minute) bought all of the passes...

Algebra Number Sense Grades 3–5
Pokémon GO!  I should have invested
Pokémon GO! I should have invested

Pikachu Pokémon GO is all the rage. News reports show people glued to their smart phones as they travel to nearby landmarks where virtual critters appear and need...

Algebra Number Sense Grades 4–HS