Video tutorial presents an illustration of the coordinate plane which is used to graph functions or plot ordered pairs. [1:09]

Take a look at this tutorial to see how to turn a parallelogram into a rectangle to find the formula for the area. [4:46]

Models how to find the area of shapes that have only right angles by covering them with square units. [4:17]

Demonstrates how to use an interactive tool to find the reflection of a quadrilateral on a Cartesian grid. Includes a discussion of slope. [2:26]

Take a look at this tutorial to learn about rotations which are just circular movements. [3:51]

Watch this tutorial to learn about the endpoints of a line segment. [1:18]

Take a look at this tutorial to learn about line segments, how to name them, and what the midpoint of a line segment is. [3:13]

Take a look at this tutorial to learn about how an angle is formed, how to name an angle, and how an angle is measured. [4:45]

Conceptualize what area is by calculating the area of a rectangle by using unit squares and the area formula. [3:21]

Vectors have both length and a direction. Follow along with this tutorial to learn about vectors and their parts and also how to name one. [3:09]

The Law of Cosines helps solve some triangle problems. This video explains several versions of the law of cosines and what they are used for. [9:22]

Learn how to use sines to find the area of a triangle. [5:33]

Demonstrates how to identify parallel and perpendicular lines in geometric drawings. [3:34]

This QuickTime movie provides an opportunity to learn about the characteristics of a rectangle. As you watch and listen to the teacher and student interact it helps clarify the thinking behind applying this concept.

Explains what it means for two triangles to be similar. Diagram of similar triangles is created with two parallel lines cut by two transversals.

Inductive reasoning is observing data and patterns to make predictions. Watch this tutorial to learn about inductive reasoning. [3:48]