Khan Academy is an excellent resource for Math and Science. Below is a page listing topics covered in the Pennsylvania Algebra 1 Keystone Exam. Khan Academy has videos and practice problems. Once you click on the topic, this link will take you directly to the Khan Academy website. The topics with arrows will give you a video of a lesson on the desired topics. The topics with a star will take you directly to practice problems. Hints are available while taking these practice problems to help guide students as they work.

Khan Academy Links by Topic