Instructional Video7:40
Khan Academy

Addition of Rational Numbers

7th - 11th
Are your pupils having problems with fractions in algebra problems? Have no fear; Sal is here! Sal takes care to guide them through the intricacies of fractions within an algebraic context, and his explanation of word problems will have...
Instructional Video3:24
Curated OER

How Do You Find a Rational Number Between Two Fractions?

8th - 9th
So do you really want to know how to find a rational number between two given fractions? The teacher explains how to average the two fractions to find a rational number between the two fractions. There are several steps involved in...
Instructional Video4:01
Curated OER

How Do You Find a Rational Number Between Two Fractions?

6th - 12th
So do you really want to know how to find a rational number between two given fractions? The teacher explains how to average the two fractions to find a rational number between the two fractions. There are several steps involved in...
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...
Instructional Video8:10
Khan Academy

MTEL Math Practice Test: 16-19

11th - Higher Ed
Providing quick lessons on lattice multiplication algorithms and inequalities, Sal takes viewers through problems 16-19 on the MTEL Practice Math Test. His calm and knowledgeable narration and easy-to-read annotations of each problem...