### Number Sense

We found 9 post available for you

#### Is 2024 a special number?

Image by dashu83 on Freepik Students are introduced to some esoteric number categories as they check out the various descriptors of this year's date.  What's a Harshad number?  What's a...

#### Wheel of Theodorus

Bring a little art into your math class as you begin to use the Pythagorean theorem and your students first meet irrational numbers. For Adventurer members we have an editable Word docx and s...

#### Is 2023 a special number?

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

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...

#### Cold NFL games

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...

#### Chuck E. Cheese needed to shred

Restaurants have been having a hard time and Chuck E. Cheese, with their arcade games and hands on everything, needed to declare bankruptcy during the pandemic. 7 BILLION previously printed tickets ...

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

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...

#### 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 th...

#### 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 ...