The Number System:
Students will learn that there are numbers that are not rational, and approximate them by rational numbers.
Square Root Cannon- Great game to get kids to understand perfect squares and it does have a range of difficulty levels
BrainPop on Square Roots- Lesson on understanding square roots. Tim and Moby do a good job with a little humor and are great for younger kids, but middle school kids find it funny as well.
Khan on Square Roots- Khan does a good job explaining square roots as well, but at a higher level. Better for middle and high school students. This is the page that gets you to all of his links about square roots.
Square Roots Millionaire- This is Who wants to be a Millionaire that is all about square roots.
Rational vs. Irrational- Drag and drop game where students have to figure out if the terms are rational or irrational.
Square Root Match Game- The old school game of Memory, but with square roots.
Rational Number Jeopardy- This game works on ordering rational numbers.
Worksheets- Great website for all topics when you need to create a worksheet dealing with most math topics. Great for all levels.