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Is 2023 a special number?

Algebra Number Sense Current events
1998 was a Harshad year. What do you notice about the number 2023? What is a Harshad number? Does 2023 meet the criteria? Big deal?  Rare?  Often?  

The Algebra of Magic Squares

Algebra Number Sense
Have you seen magic squares before? How could a teacher use these puzzles to help students with different number skills? How few blank cells could you leave? Are there any special cel...

Why isn't the World Cup happening now?

Algebra Number Sense Sports Current events Wow factor
The World Cup Finals is only played every 4 years but isn't it always in June?    The World Cup Finals 2022 will be played in Qatar from November 21st until December 18th, 2022. &nbs...

Cold NFL games

Algebra Number Sense Sports Current events Data and probability
There have been some pretty cold football games. How do you suppose the frigid temperatures affect the success or failure of the teams that are involved? Do teams from colder areas usually beat warm...

Spider-Man continues

Number Sense Ratio and Proportion Data and probability
Spider-Man: No Way Home opened on December 17, 2021.   How much did it cost to make? How much will it gross? Is the Spider-Man phenomena a guarantee for success? How would yo...

Super Bowl Numerals

Number Sense Sports Holidays and Annual Events
Super Bowl numbers are appearing again. As students start getting into the current Super Bowl hype, help them to understand the notation that the sports writers and advertisements a...

What's interesting about this number?

Algebra Number Sense Data and probability
  Why did we put it on YummyMath today? What do you notice about this number? What do you wonder? Do you think that this happens often in a year?

Will one roll be enough?

Number Sense Geometry Holidays and Annual Events Ratio and Proportion
Students can use the man or the basket as a reference as they try to approximate the size of these gifts and how much wrapping paper will actually be needed. Approximation, surface are...

Extreme weather 2020

Number Sense Math and Science
Because of climate change, we've been having too many extreme weather events. There have been unusual droughts and heat in the West, an increased number of hurricanes, severe flooding, and high ...

Is there much of a difference between 99.9% or 99.999%?

Algebra Number Sense Math and Science 3-act tasks Data and probability
Use our present need for cleanliness to engage your students.    Does it really matter whether you kill 99.9% of the bacteria or 99.999% of the germs? In this activity, we'v...
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