Instructional Video
Sophia Learning

Sophia: Pythagorean Theorem Proof

For Students 9th - 10th Standards
Find the area of several figures to prove the Pythagorean theorem. Complete quiz to check understanding. [5:16]
Instructional Video
Sophia Learning

Sophia: Practice With Rotations

For Students 9th - 10th Standards
Explore how to rotate a geometric object across a coordinate plane with this video lesson. [10:37] Assess learning with a quiz.
Instructional Video
Khan Academy

Khan Academy: Linear Transformation Examples: Unit Vectors

For Students 9th - 10th Standards
What unit vectors are and how to construct them.
Instructional Video
Sophia Learning

Sophia: Demonstrating Similarity

For Students 9th - 10th
Different shapes are used to explore and define similarity. Assess learning with a quiz.
Instructional Video
Sophia Learning

Sophia: Nets

For Students 6th - 8th
In this video tutorial, students will explore several different shapes and the nets that make them. Quiz to follow the lesson. [3:12]
Instructional Video
Imagine Learning Classroom

Learn Zillion: Prove Two Figures Are Similar After a Dilation

For Students 8th Standards
In this lesson, you will learn how to determine if two figures are similar by using dilations and scale factors. [5:23]
Instructional Video
Mucho Math

Algebra2go: Finding Perimeter of Rectangular Shapes

For Students 9th - 10th Standards
This video requires students to find missing side lengths of rectangular shapes prior to finding the perimeter.
Instructional Video
Khan Academy

Khan Academy: Volume: Volume of a Sphere

For Students 9th - 10th
This video lesson explains how to calculate the volume of a sphere. [2:34]
Instructional Video
Khan Academy

Khan Academy: Unit Conversion: Perimeter and Unit Conversion

For Students 5th - 8th Standards
Students learn to solve perimeter problems that involve converting units within the same measurement system.
Instructional Video
Khan Academy

Khan Academy: Triangle Angle Properties: Sum of Interior Angles of a Polygon

For Students 9th - 10th
Students explore the interior angles of a polygon by explanding on the concept that a triangle has 180 degrees and developing a formula for all polygons.
Instructional Video
Khan Academy

Khan Academy: Triangles: Area of Inscribed Equilateral Triangle

For Students 9th - 10th Standards
Students explore a problem that requires then to figure out the area of an equilateral triangle inscribed in a circle using a little trigonometry.
Instructional Video
Khan Academy

Khan Academy: Triangles: Circumcenter of a Right Triangle

For Students 9th - 10th Standards
The video tutorial shows that the midpoint of the hypotenuse is the circumcenter.
Instructional Video
Khan Academy

Khan Academy: Triangle Angle Properties: Sum of the Exterior Angles of Polygon

For Students 9th - 10th
Students explore a more elegant way to find the sum of the exterior angles of a convex polygon.
Instructional Video
National Science Foundation

National Science Foundation: Science of Nfl Football: Geometric Shapes

For Students 9th - 10th
NBC's Lester Holt explores the prolate spheroid, the three-dimensional shape of a football, and how it helps an NFL quarterback throw a hard, accurate pass. [4:09]
Instructional Video
CK-12 Foundation

Ck 12: Elem Math: Overview of Basic 3 D Figures

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 basic three dimensional figures.
Instructional Video
CK-12 Foundation

Ck 12: Elem Math: Overview of Quadrilaterals

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 various quadrilaterals.
Instructional Video
Art of Problem Solving

Art of Problem Solving: Length and Perimeter

For Students 9th - 10th
Video tutorial uses examples to reinforce understanding of length and perimeter. [7:58]
Instructional Video
Loyola University Chicago

Math Flix: Pythagorean Theorem Puzzle

For Students 5th - 8th
This QuickTime movie uses a tangram-like puzzle to help understand the Pythagorean Theorem. As you watch and listen to the teacher and student interact it helps clarify the thinking behind applying this concept.
Instructional Video
CK-12 Foundation

Ck 12: Elem Math: Overview of Area of Squares and Rectangles Word Problems

For Students 3rd - 5th Standards
[Free Registration/Login may be required to access all resource tools.] Students watch a video overview on how to find the area of a square and rectangle.
Instructional Video
Study Pug

Study Pug: Coterminal Angles

For Students 9th - 10th
Video lesson explores coterminal angles which are angles that share the same terminal arms. [17:06]
Instructional Video
Khan Academy

Khan Academy: Kant: On Space, Part 1

For Students 9th - 10th
What is space? Kant's answer is a head-scratcher: space is merely a form of intuition. Scott Edgar explains this rather perplexing answer in accessible, every-day language. [7:12]
Instructional Video
Khan Academy

Khan Academy: Measuring Angles in Degrees

For Students 4th Standards
Learn how to measure an angle with a protractor.
Instructional Video
Khan Academy

Khan Academy: Measuring Angles Using a Protractor 2

For Students 4th Standards
Sal measures several angles with a protractor.
Instructional Video
Khan Academy

Khan Academy: Measuring Angles Using a Protractor

For Students 4th Standards
Learn to use a virtual protractor to measure angles.

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