Instructional Video
Virtual Nerd

Virtual Nerd: Algebra 2: How Do You Find the Sum of Two Functions?

9th - 10th Standards
Follow along with this tutorial to learn how to add two functions together. [4:22]
Instructional Video
Virtual Nerd

Virtual Nerd: How Do You Find the Sine of an Angle in a Right Triangle?

9th - 10th Standards
A trigonometric ratio is a ratio between two sides of a right triangle and includes the sine ratio. Discover how to find the sine of a particular angle in a right triangle by watching this video. [2:48]
Instructional Video
Virtual Nerd

Virtual Nerd: How Do You Find the Cosine of an Angle in a Right Triangle?

9th - 10th Standards
A trigonometric ratio is a ratio between two sides of a right triangle. The cosine ratio is one of these ratios. Take a look at this tutorial to see how to find the cosine of a particular angle in a right triangle. [3:22]
Instructional Video
CPALMS

Cpalms: All Circles Are Similar Especially Circular Pizza!

9th - 10th Standards
Chefs at Gaines Street Pies explain how they make their pizzas and why all of their pizzas are similar circles. [4:13]
Instructional Video
Sophia Learning

Sophia: Finding the Equation for an Ellipse: Lesson 4

9th - 10th Standards
This lesson explains how to find the equation for an ellipse given its foci and vertices. It is 4 of 4 in the series titled "Finding The Equation For An Ellipse." [5:17]
Instructional Video
Sophia Learning

Sophia: Sas Triangle Congruence: Lesson 3

9th - 10th Standards
This lesson will explain that demonstrating that two pairs of sides are equal in length and that the included angles are equal will suffice in showing that two triangles are congruent. It is 3 of 5 in the series titled "SAS Triangle...
Instructional Video
Sophia Learning

Sophia: Sas Triangle Congruence: Lesson 5

9th - 10th Standards
This lesson will explain that demonstrating that two pairs of sides are equal in length and the included angles are equal will suffice in showing that two triangles are congruent. It is 5 of 5 in the series titled "SAS Triangle...
Instructional Video
Sophia Learning

Sophia: Scalar Multiplication: Lesson 2

9th - 10th Standards
This lesson will introduce scalars, and demonstrate how to perform scalar multiplication with matrices. It is 2 of 10 in the series titled "Scalar Multiplication." [3:01]
Instructional Video
Sophia Learning

Sophia: Shading the Graph of an Inequality: Lesson 2

9th - 10th Standards
The procedure for plotting and shading the graph of an inequality is demonstrated here. This lesson is 2 of 9 in the series titled "Shading the Graph of an Inequality." A short multiple-choice quiz accompanies the video. [2:46]
Instructional Video
Sophia Learning

Sophia: Triangle Congruence Theorem (Hl): Lesson 4

9th - 10th Standards
This lesson will present the Hypotenuse-Leg Triangle Congruence Theorem. It is 4 of 5 in the series titled "Triangle Congruence Theorem (HL)." [2:47]
Instructional Video
Sophia Learning

Sophia: Using Matrices to Organize Data: Lesson 3

9th - 10th Standards
This lesson provides real-world examples that demonstrate how to organize data into matrices. It is 3 of 5 in the series titled "Using Matrices to Organize Data." [4:43]
Instructional Video
Sophia Learning

Sophia: Using Matrices to Organize Data: Lesson 5

9th - 10th Standards
This lesson provides real-world examples that demonstrate how to organize data into matrices. It is 5 of 5 in the series titled "Using Matrices to Organize Data." [2:51]
Instructional Video
Sophia Learning

Sophia: Zero Determinant: Lesson 3

9th - 10th Standards
This lesson goes over matrices with a determinant of zero. It is 3 of 7 in the series titled "Zero Determinant." [2:14]
Instructional Video
Sophia Learning

Sophia: Zero Determinant: Lesson 4

9th - 10th Standards
This lesson goes over matrices with a determinant of zero. It is 4 of 7 in the series titled "Zero Determinant." [2:44]
Instructional Video
Sophia Learning

Sophia: Zero Determinant: Lesson 5

9th - 10th Standards
This lesson goes over matrices with a determinant of zero. It is 5 of 7 in the series titled "Zero Determinant." [2:47]
Instructional Video
Sophia Learning

Sophia: Dividing Complex Numbers

9th - 10th Standards
This video lesson demonstrates how to divide with complex numbers, including the imaginary number i. The tutorial includes detailed examples. [3:26]
Instructional Video
Sophia Learning

Sophia: Scalar Multiplication

9th - 10th Standards
Determine how to do scalar multiplication with matrices. Check understanding with a quiz. [2:21]
Instructional Video
Sophia Learning

Sophia: Adding Vectors Using the Parallelogram Rule: Lesson 2

9th - 10th Standards
This lesson demonstrates how to add vectors using the parallelogram rule. It is 2 of 2 in the series titled "Adding Vectors Using the Parallelogram Rule." [9:01]
Instructional Video
Sophia Learning

Sophia: Adding Vectors Using the Tail to Tip Method: Lesson 2

9th - 10th Standards
This lesson demonstrates how to add vectors using the tail-to-tip method. It is 2 of 2 in the series titled "Adding Vectors Using the Tail-to-Tip Method." [6:52]
Instructional Video
Sophia Learning

Sophia: Multiplying 3 Vectors by a Scalar: Lesson 1

9th - 10th Standards
This lesson explains how to multiply a 3-vector by a scalar. It is 1 of 7 in the series titled "Multiplying 3-Vectors by a Scalar." [2:15]
Instructional Video
Sophia Learning

Sophia: Multiplying 3 Vectors by a Scalar: Lesson 2

9th - 10th Standards
This lesson explains how to multiply a 3-vector by a scalar. It is 2 of 7 in the series titled "Multiplying 3-Vectors by a Scalar." [4:41]
Instructional Video
Sophia Learning

Sophia: Multiplying 3 Vectors by a Scalar: Lesson 3

9th - 10th Standards
This lesson explains how to multiply a 3-vector by a scalar. It is 3 of 7 in the series titled "Multiplying 3-Vectors by a Scalar." [2:00]
Instructional Video
Sophia Learning

Sophia: Solving an Sas Triangle With the Law of Cosines: Lesson 1

9th - 10th Standards
Solving an SAS by using the Law of Cosines is demonstrated here. This lesson is 1 of 6 in the series titled "Solving an SAS Triangle with the Law of Cosines." [3:22]
Instructional Video
Sophia Learning

Sophia: Vector Addition: Lesson 5

9th - 10th Standards
This lesson introduces addition operations in vectors. It is 5 of 6 in the series titled "Vector Addition." [1:45]