Numbers

Who invented the number system we use today?
What do you know about the history of numbers?
Why are numbers so important?
What are the two most important numbers in the world?
Some people say that math is the language of the universe. Do you agree? Why or why not?
What is your favorite number? Why is it your favorite number?
What numbers are unlucky?
Should students be allowed to use calculators to do math in school or should they learn to do it without calculators first?
Do you know anything about the Fibonacci sequence?
What is the first thing you think of when you think of three?