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Now that LeBron James is becoming an L. A. Laker, will this company go broke?
Now that LeBron James is becoming an L. A. Laker, will this company go broke?

Fanatics is an online sportswear retailer that has promised to accept jersey returns if your chosen player makes a team switch. In this activity student try to calculate...

Number Sense Sports Grades 5–HS
Fibonacci coloring
Fibonacci coloring

Let your students simply enjoy coloring our designs or artistically play with the whole creation of Φ designs. Simply coloring our Fibonacci patterns might allow students to ponder...

Algebra Number Sense Grades 3–HS
Impress your parents at dinner
Impress your parents at dinner

This activity is the first in our series on mental math tricks. Let your students develop their own individual way of mentally multiplying by 0.5, 5, 50, 500,...

Algebra Number Sense Grades 4–HS
What are the odds that Justify can win the Triple Crown?
What are the odds that Justify can win the Triple Crown?

Justify has won the Triple Crown. He's the 13th horse to ever win all three races ... Kentucky Derby, Preakness, and the Belmont Stakes. Amazing! Justify winner of...

Number Sense Sports Grades 6–HS
Will Damarious Randall have to pay big?
Will Damarious Randall have to pay big?

Warriors won the NBA Championships. Randall won't have to buy jerseys! The Cleveland Brown's safety player, Damarious Randall, posted this tweet. Its been very popular and retweeted a...

Number Sense Sports Grades 4–5
Boeing 787 draws an airplane over the United States
Boeing 787 draws an airplane over the United States

Recently, pilots of a Boeing 787 testing a new set of Rolls Royce engines, fulfilled their FAA required long-distance endurance requirement in an unusual way. The Boeing pilots...

Number Sense Geometry Grades 5–HS
How fast can you run?
How fast can you run?

Have you heard of The Six Million Dollar Man? He was the character in a science fiction show about an astronaut that was rebuilt, bionically, after his space...

Algebra Number Sense Grades 4–7
Jackie Robinson
Jackie Robinson

April 15th, 1947 was a date to remember. Jackie Robinson became the first African-American baseball player to play in Major League Baseball since the game was segregated in...

Algebra Math and Social Studies Grades 5–HS
What me?  Irrational?
What me? Irrational?

We've found that some students believe that the approximation that their calculators show for irrational numbers is exact. Here's an activity that you can advertise as long multiplication...

Number Sense Grades 4–7
Pizza party figuring
Pizza party figuring

In this activity students decide how to divide 2 pizzas amongst 6 adults and 3 pizzas amongst 8 kids. Fractional pizza parts need to be drawn and considerations...

Number Sense Geometry Grades 3–5
Want to earn $150,000? - Mersenne prime search
Want to earn $150,000? - Mersenne prime search

What's a Mersenne prime? How hard could it be to find the next one? Why are there only 50 known Mersenne primes? What's with $150,000?

Algebra Number Sense Grades 4–HS
Curling
Curling

Friction, score-keeping, trajectory and weirdness are the main concepts in this activity. Curling is not a well-understood sport but the science and strategy are easily understood and enjoyed....

Geometry Math and Science Grades 4–HS