Hi, what do you want to do?
Ducksters
Ducksters: Kids Math: Prime Numbers
Math prime numbers for kids to learn about these unique digits.
National Council of Teachers of Mathematics
The Math Forum: Famous Problems in the History of Mathematics
On this site, there are several math problems to explore and solve. Look through some solutions by famous mathematicians and expand your thinking about some interesting math concepts. Teachers of elementary grades may want to use this...
Shmoop University
Shmoop: Basic Operations: Prime Factorization
Students learn about prime factorization. The resource consists of notes, step-by-step examples, and practice problems with solutions.
PBS
Pbs Learning Media: Pizza Toppings
This Cyberchase video features Bianca who uses Venn Diagrams to make a pizza that satisfies the topping preferences of her friends.