Instructional Video10:19
Khan Academy

Square Roots And Real Numbers, Pre-Algebra

7th - 11th
Sal works through several problems involving rational and irrational numbers and shows how to find the difference. This video is a good stepping stone for those preparing to take on more challenging algebra work.
Instructional Video6:04
Curated OER

Rational and Irrational Numbers

6th - 8th
Irrational, rational, and terminating numbers are all covered in this math tutorial. The instructor uses a question from a math test to work through, showing how to compute and evaluate each answer to determine if the number given in...