Virtual Nerd
Virtual Nerd: What Is the Formula for the Area of a Parallelogram?
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]
Khan Academy
Khan Academy: Intro to Area and Unit Squares
Models how to find the area of shapes that have only right angles by covering them with square units. [4:17]
Khan Academy
Khan Academy: Performing Reflections: Quadrilateral
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]
Virtual Nerd
Virtual Nerd: What Is a Rotation?
Take a look at this tutorial to learn about rotations which are just circular movements. [3:51]
Virtual Nerd
Virtual Nerd: What Are the Endpoints of a Line Segment?
Watch this tutorial to learn about the endpoints of a line segment. [1:18]
Virtual Nerd
Virtual Nerd: What Is a Line Segment?
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]
Virtual Nerd
Virtual Nerd: What Is an Angle?
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]
Khan Academy
Khan Academy: Transitioning From Unit Squares to Area Formula
Conceptualize what area is by calculating the area of a rectangle by using unit squares and the area formula. [3:21]
Virtual Nerd
Virtual Nerd: What Is a Vector?
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]
Virtual Nerd
Virtual Nerd: What Is the Law of Cosines?
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]
Virtual Nerd
Virtual Nerd: What Is the Formula for the Area of a Triangle Using Sines?
Learn how to use sines to find the area of a triangle. [5:33]
Khan Academy
Khan Academy: Parallel and Perpendicular Lines
Demonstrates how to identify parallel and perpendicular lines in geometric drawings. [3:34]
Loyola University Chicago
Math Flix: Concept Development Rectangles
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.
Khan Academy
Khan Academy: Triangles: Intro to Triangle Similarity
Explains what it means for two triangles to be similar. Diagram of similar triangles is created with two parallel lines cut by two transversals.
Virtual Nerd
Virtual Nerd: What Is Inductive Reasoning?
Inductive reasoning is observing data and patterns to make predictions. Watch this tutorial to learn about inductive reasoning. [3:48]
Loyola University Chicago
Math Flix: Polyhedra Basics Using Nets
This QuickTime movie provides an opportunity to learn about the basics of Polyhedra using Nets. As you watch and listen to the teacher and student interact it helps clarify the thinking behind applying this concept.
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