Instructional Video
Loyola University Chicago

Math Flix: Complementary and Supplementary Angle Definitions

For Students 3rd - 8th Standards
This video provides an opportunity to learn about complementary and supplementary angles. As you watch and listen to the teacher and student interact it helps clarify the thinking behind applying this concept. [3:41]
Instructional Video
Loyola University Chicago

Math Flix: Tranformations Coordinate Plane 2 Flip, Slide

For Students 6th - 8th Standards
This QuickTime movie provides an opportunity to look at what graphing a transformation looks line on the coordinate plane. As you watch and listen to the teacher and student interact it helps clarify the thinking behind applying this...
Instructional Video
PBS

Pbs: Measurement and Geometry: Equivalencies and Benchmarks

For Students 9th - 10th
Knowing some basic equivalencies will help you to change a measurement from one unit to another. Benchmarks can be used to estimate a unit of measure.
Instructional Video
CK-12 Foundation

Ck 12: Elem Math: Classifying Triangles Based on Equal Sides

For Students 3rd - 5th Standards
[Free Registration/Login may be required to access all resource tools.] Students watch a video overview on how to classify triangles based on side length.
Instructional Video
CK-12 Foundation

Ck 12: Elem Math: Overview of Squares and Rectangles

For Students 3rd - 5th Standards
[Free Registration/Login may be required to access all resource tools.] Students watch a video overview on the properties of squares and rectangles.
Instructional Video
Loyola University Chicago

Math Flix: Square Numbers From "Sea Squares"

For Students 3rd - 5th
This QuickTime movie provides an opportunity to identify square numbers with a literature connection to "Sea Squares" by Joy N. Hulme. Then the data is organized in a table and graphed. As you watch and listen to the teacher and student...
Instructional Video
Khan Academy

Khan Academy: Geometry: Part 1 of Proof of Heron's Formula

For Students 9th - 10th Standards
Demonstrates how to derive a version of Heron's formula using the Pythagorean Theorem and the formula for the area of a triangle. Applies Heron's formula to solve a sample problem. [10:59]
Instructional Video
Khan Academy

Khan Academy: Geometry: Proof: Opposite Sides of Parallelogram Congruent

For Students 9th - 10th Standards
Demonstrates how to prove that the opposite sides of a parallelogram are congruent based on knowledge of the special angles created when parallel lines are cut by a transversal and the triangle congruency postulates. [8:30]
Instructional Video
Khan Academy

Khan Academy: Geometry: Part 2 of the Proof of Heron's Formula

For Students 9th - 10th Standards
Completes the proof of Heron's formula that was begun in the video, "Part 1 of Proof of Heron's Formula." [12:08]
Instructional Video
Khan Academy

Khan Academy: Geometry: Angles Formed by Parallel Lines and Transversals

For Students 9th - 10th Standards
Identifies which angles are congruent when parallel lines are cut by a transversal. [7:07]
Instructional Video
Khan Academy

Khan Academy: Geometry: Proof: Opposite Angles of Parallelogram Congruent

For Students 9th - 10th Standards
This video tutorial demonstrates how to prove that the opposite angles of a parallelogram are congruent based on knowledge of the special angles created when parallel lines are cut by a transversal. [4:08]
Instructional Video
Khan Academy

Khan Academy: Geometry: Euler's Line Proof

For Students 9th - 10th Standards
Proves that the circumcenter, orthocenter, and centroid all lie on the same line, the Euler line. Proof relies on understanding of properties of similar triangles and properties of special parts of a triangle. [9:50]
Instructional Video
Khan Academy

Khan Academy: Geometry: Proof: Diagonals of Parallelogram Bisect Each Other

For Students 9th - 10th Standards
Demonstrates how to prove that the diagonals of a parallelogram bisect each other based on knowledge of the special angles created when parallel lines are cut by a transversal and the triangle congruency postulates. [9:06]
Instructional Video
Math Mammoth

Math Mammoth: Pythagorean Theorem and Geometry 1: Area of an Isosceles Triangle

For Students 7th
This video demonstrates how to find the area of an isosceles triangle by first determining the altitude using the Pythagorean Theorem. [3:53]
Instructional Video
Khan Academy

Khan Academy: Geometry: Perimeter of a Polygon

For Students 3rd - 8th Standards
Shows how to find the perimeter of a parallelogram. [1:20]
Instructional Video
Khan Academy

Khan Academy: Geometry: Lines, Line Segments, and Rays

For Students 9th - 10th Standards
Compares qualities of line segments, lines, and rays. Practice problems available. [3:38]
Instructional Video
Khan Academy

Khan Academy: Geometry: Volume of a Sphere

For Students 9th - 10th Standards
Explains how to calculate the volume of a sphere. [2:35]
Instructional Video
Khan Academy

Khan Academy: Geometry: Solid Geometry Volume

For Students 9th - 10th Standards
Describes how to find the volume of triangular prisms and cubes by finding the area of the base and multiplying it by the height (or depth). Practice problems available. [3:56]
Instructional Video
PBS

Pbs: Measurement and Geometry: Finding Area

For Students 9th - 10th Standards
Area is the measure of the surface inside a flat figure and is measured in square units.
Instructional Video
Khan Academy

Khan Academy: Geometry: Identifying Complementary and Supplementary Angles

For Students 9th - 10th Standards
Shows how to identify complementary and supplementary angles in a diagram. [2:36]
Instructional Video
Khan Academy

Khan Academy: Geometry: Acute, Obtuse, and Right Angles

For Students 9th - 10th
Demonstrates how to find all acute, obtuse, and right angles in a given diagram. [6:35]
Instructional Video
Khan Academy

Khan Academy: Geometry: Finding Missing Angles

For Students 9th - 10th Standards
Shows how to find the measure of missing angles based on the measure of a straight angle. [1:41]
Instructional Video
Khan Academy

Khan Academy: Geometry: Introduction to Angles (Old)

For Students 9th - 10th Standards
Defines an angle, complementary angles, supplementary angles, and relates reflex angle measures to degress in a circle. [9:55]
Instructional Video
Khan Academy

Khan Academy: Geometry: Complementary and Supplementary Angles

For Students 9th - 10th Standards
Defines and gives examples of complementary angles, supplementary angles, and adjacent angles. Practice problems available. [8:31]

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