PBS
Pbs: Creating Numerical Patterns With Rules: Bianca Functions in the Wild
In this Cyberchase video, Bianca and her friend go camping and soon realize that Bianca has left the food at home. They find a vending machine in the woods, but it doesn't dispense the food that corresponds with the numbers Bianca...
Shodor Education Foundation
Shodor Interactivate: Whole Number Cruncher
Put a number, the input, in the Whole Number Cruncher. See if you can discover the rule that gives you the result, the output. Directions are just a click away.