Instructional Video5:54
Curated Video

Introduction to Geometry

K - Higher Ed
When you hear the word "geometry", you might think of shapes. And you wouldn't be wrong! But before we can get to shapes, we need to talk about the parts that can make up shapes, like points, lines, rays, and line segments. In this...
Instructional Video8:12
Curated Video

Trihexaflexagon Demo

3rd - Higher Ed
This video demonstrates how to create a trihexaflexagon.
Instructional Video2:48
Curated Video

Advanced Shapes - Math & Geometry Song

Pre-K - 8th
Learn about advanced shapes like trapeziums and right trapezoids with this math and geometry song by KLT.
Instructional Video4:55
Curated Video

Let's Talk about Triangles

3rd - Higher Ed
“Let’s Talk about Triangles” describes the main types of triangles and explains what makes each type unique.
Instructional Video4:19
Curated Video

Classifying Triangles

3rd - Higher Ed
Classifying Triangles explores the six types of triangles by defining the triangle types and classifying triangles by side length and angle measurement.
Instructional Video6:30
Curated Video

Proofs Using CPCTC

K - 8th
Congruent triangles are two triangles that share the same shape and size, but their positioning may be different. If you know that two triangles are congruent, you can prove every corresponding angle and every corresponding side is...
Instructional Video3:19
Curated Video

Angle Construction

3rd - Higher Ed
This video provides instruction on how to construct an angle bisector for a given angle.
Instructional Video5:47
Curated Video

Subtract Angles

K - Higher Ed
The video “Subtract Angles” reviews types of angles and demonstrates how to find unknown angle measures by using a subtraction equation with a symbol for the unknown angle measure.
Instructional Video2:30
Curated Video

Conformal Maps

12th - Higher Ed
Nobel Laureate Roger Penrose (Oxford) gives a brief introduction to conformal space and how it can be used to represent space-time infinities.
Instructional Video1:53
Curated Video

Conformal Cyclic Cosmology

12th - Higher Ed
Nobel Laureate Roger Penrose, University of Oxford, summarizes the core aspects of his theory of Conformal Cyclic Cosmology (CCC).
Instructional Video5:55
Curated Video

Mastering Keyboarding Technique

3rd - Higher Ed
Explains the proper keyboarding technique and demonstrate how to use it for proficient typing.
Instructional Video6:47
Curated Video

Constructing Segments and Angles

3rd - Higher Ed
In this video, you will learn how to construct congruent line segments and congruent angles. To complete constructions in mathematics, you will need only two tools: a compass and a straightedge.
Instructional Video7:41
Curated Video

Math and Physical Therapy for Kids: Surprising Connections Uncovered!

K - 5th
In this video, Caroline from Doodles and Digits interviews Dr. Kayla Borchers, a physical therapist and corrective exercise specialist. Dr. Borchers uses math every day to help her patients heal through movement. She also runs a private...
Instructional Video6:24
Curated Video

Law of Sines and Cosines

3rd - Higher Ed
This video will discuss examples of application of sine and cosine laws.
Instructional Video4:44
Curated Video

Measure of an Angle

K - Higher Ed
This video will discuss examples of converting between radian and degree measure.
Instructional Video5:25
Curated Video

Angle Relationships

K - Higher Ed
“Angle Relationships” will explain how to express the relationship between two angles.
Instructional Video4:29
Curated Video

Identify Angles

K - Higher Ed
A video entitled "Identify Angles" which discusses the different types of angles and how they can fit together to form other angles.
Instructional Video6:00
Curated Video

Trigonometry and the Unit Circle

K - Higher Ed
This video will explain trigonometric functions and how to use them with the unit circle.
Instructional Video7:40
Zach Star

What are the odds that 3 'random' points on a sphere will form an acute triangle?

12th - Higher Ed
What are the odds that 3 'random' points on a sphere will form an acute triangle?
Instructional Video11:01
Zach Star

An inverted pendulum puzzle

12th - Higher Ed
An inverted pendulum puzzle
Instructional Video7:12
The Backyard Scientist

The Impossible Fire pit Tornado

K - 5th
Is it possible to make a fire pit that always makes a fire tornado? I put some ideas to the test in this video to see if its possible!
Instructional Video4:27
Curated Video

Geometry Egg Hunt: Angle, Line, Ray, and Line Segment

6th - 8th
Geometry Egg Hunt: Angle, Line, Ray, and Line Segment
Instructional Video5:21
Curated Video

Pythagorean Theorem

K - 8th
"Pythagorean Theorem" will show that the area of two squares (sides A and B) equals the area of square (side C).
Instructional Video4:16
Curated Video

Area of Oblique Triangles

3rd - Higher Ed
A video entitled “Area of Oblique Triangles” which models how to calculate the areas of oblique triangles.