Khan Academy: Debugging Webpages With the Browser Console

A video that demonstrates how to solve equations with variables on both sides. The first two examples give the equation and the third example is a word problem in which an equation must be written and then solved. This video is also...

This video lesson demonstrates an attempt at an optimal trial division primality test that uses the Sieve of Eratosthenes. This video lesson from Khan Academy is intended for students who are taking an introductory computer science course.

Students can practice analyzing structure with linear inequalities with these multiple-choice practice problems.

In this seven-problem quiz/practice students calculate the point at which a ray intersects with a plane in three dimensions.

In this seven-question quiz/practice students find where a ray intersects with a line in implicit form.

A continuation of the video Introduction to Interest also from the Khan Academy. This segment develops formulas for both simple and compound interest using the variables P, r and t. After each of the formulas are derived, they are used...

Video lesson containing probability examples with playing cards. Venn diagram is used to show the sample space for an example that uses the addition rule. [10:02]

Video showing how to multiply and divide with significant figures. Includes examples of carpeting a floor and laying tile. [9:31]

Video shows how to divide complex numbers by using complex conjugates in general terms and then with a specific example. [8:58]

This video showing more examples of long division problems involving single-digit divisors with remainders. Practice problems are available. [10:07]