Instructional Video
Sophia Learning

Sophia: Finding a Horizontal Tangent: Lesson 5

9th - 10th
This lesson demonstrates how to determine when the derivative of a function at a point is horizontal. It is 5 of 7 in the series titled "Finding a Horizontal Tangent."
Instructional Video
Sophia Learning

Sophia: Finding a Horizontal Tangent: Lesson 1

9th - 10th
This lesson demonstrates how to determine when the derivative of a function at a point is horizontal. It is 1 of 7 in the series titled "Finding a Horizontal Tangent."
Instructional Video
Sophia Learning

Sophia: Complementary Angles

6th - 8th
Complementary angles are introduced in this video tutorial. [1:18] Students can check their understanding with an assessment.
Instructional Video
Sophia Learning

Sophia: Triangle Exterior Angles Practice

9th - 10th
This video lesson demonstrates how to use the triangle exterior angle theorem to find interior angle measurements of a triangle. [4:28]
Instructional Video
Sophia Learning

Sophia: Adjacent Angles

6th - 8th
This video lesson [2:10] defines and provides an example of adjacent angles. Students can check their understanding with an assessment.