Flipped Math
Measuring Angles
An informative presentation shows pupils how to name and measure angles. Scholars revisit the different types of angles and their definitions and use their knowledge of what an angle bisector is to solve algebraic problems. At the end,...
Flipped Math
Points, Lines, and Planes
Geometry is more than just vocabulary. Pupils learn the basic geometric definitions and how to identify and name points, lines, and planes. Though the first lesson is packed with related vocabulary, scholars experience four postulates...
Crash Course
Geometric Optics: Crash Course Physics #38
Light can be a mysterious phenomenon. Take away some of the mystery with an intriguing video lesson. The 38th lesson of the Crash Course physics series studies the movement of light waves. Topics include refraction and reflection as well...
Math Antics
Points, Lines and Planes
Geometry begins with a point. The video introduces the concepts of points, lines, and planes. Using diagrams, the presenter includes how to name the objects along with how to write the names. Previewing the concept of 3-D space ends the...
Krista King Math
Naming Simple Geometric Figures
Mathematicians use notation for efficiency, so make your classes more efficient! The instructor explains the definition and notation for key elements of geometry such as points, lines, and planes. This is the 37th lesson is a series of...
Brightstorm
Radian Measure of Angles - Concept
An informative lesson begins with a concept video explaining how radians are figured. Then it offers videos of four progressively difficult guided practice problems.
Curated OER
What is an Angle?
An angle is formed when two rays share a common endpoint. Want to know more about angles? There are a lot of terms in this lesson. You might have to watch it two or even three times to make sure you understand all the terms. I recommend...
Curated OER
What is an Angle?
An angle is formed when two rays share a common endpoint. Want to know more about angles? There are a lot of terms in this lesson. You might have to watch it two or even three times to make sure you understand all the terms. I recommend...
Curated OER
What is a Ray?
A ray is a line that begins at an identified point and then goes on forever in one direction. The identified point is called the endpoint. There needs to be another identified point on the line to be able to identify the line as a ray....
Science Friday Initiative
Science Friday: Manhattanhenge: Watch a Star Align
Neil deGrasse Tyson, director of the Hayden Planetarium, identified the phenomenon where the sun lines up for spectacular views in New York over a decade ago and coined it Manhattanhenge. Watch this cosmic event unfold right through the...
Khan Academy
Khan Academy: Introduction to Euclidean Geometry: Identifying Rays
In this video students learn about the key aspects of rays.
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]
Crash Course
Crash Course History of Science #17: Newton and Leibniz
Who do we have to thank for inventing calculus? Whether you love or hate it, the credit goes to two people - Sir Isaac Newton and Gottfried Wilhelm von Leibniz. Learn about their myriad of accomplishments in science and math during the...
Sophia Learning
Sophia: Drawing a Ray: Lesson 3
This lesson will show you the tools and procedures involved in drawing and labeling a ray. It is 3 of 8 in the series titled "Drawing a Ray."
Sophia Learning
Sophia: Drawing a Ray: Lesson 5
This lesson will show you the tools and procedures involved in drawing and labeling a ray. It is 5 of 8 in the series titled "Drawing a Ray."
Sophia Learning
Sophia: Drawing a Ray: Lesson 7
This lesson will show you the tools and procedures involved in drawing and labeling a ray. It is 7 of 8 in the series titled "Drawing a Ray."
Sophia Learning
Sophia: Drawing a Ray: Lesson 2
This lesson will show you the tools and procedures involved in drawing and labeling a ray. It is 2 of 8 in the series titled "Drawing a Ray."
Sophia Learning
Sophia: Drawing a Ray: Lesson 6
This lesson will show you the tools and procedures involved in drawing and labeling a ray. It is 6 of 8 in the series titled "Drawing a Ray."
Sophia Learning
Sophia: Drawing a Ray
This lesson will show you the tools and procedures involved in drawing and labeling a ray.
California Academy of Sciences
Ca Academy of Sciences: Freshwater Stingrays
Academy biologist Brooke provides a behind the scenes look at freshwater stingrays (Potamotrygon species). These stingrays typically inhabit fresh waters of South America and diet on fishes and small invertebrates. Like their saltwater...