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...