PBS
When Giant Amphibians Reigned
Take an evolutionary journey as an ancient amphibian. A lesson from a PBS series describes the features and evolutionary sequence of a large amphibian group, the Temnospondyls. Although extinct over 210 million years ago, many...
PBS
Can We Get DNA from Fossils?
Just how long can a fossil preserve DNA? It seems that DNA becomes unreadable after about 6.8 million years. Learn about the science that helped make this conclusion and the mistakes made along the way in a lesson from a PBS Eons video...
Crash Course
Marie Curie and Spooky Rays: Crash Course History of Science #31
Marie Curie overcame limitations to become the first person to win two Nobel Prizes. A video presentation outlines her work and discoveries in radioactivity. The narrator gives a timeline of her achievements as she sacrificed her...
Veritasium
Epic Slow-Mo Drum Implosions!
Slow motion effects add a dramatic influence to a lesson on atmospheric pressure. A video presentation explores characteristics of atmospheric pressure through experimentation. A large imploding drum demonstrates the effects of air...
Veritasium
How Long Will You Live?
Cells only divide a specific number of times before they die at the end of the division cycle. This molecular clock is the culprit of aging. A video explores the concept with a trip to New York to discuss the phenomenon with a leading...
SciShow
The Milky Way May Have a Disk of Black Holes
With better technology comes better information. An interesting video presentation discusses the evidence that makes scientists believe black holes exist in our galaxy. The narrator explains what a black hole is and how one forms.
Veritasium
The Kg Is Dead, Long Live the Kg
Precision is imperative in science! Learn how science defines units of measure and how that changed for several units in 2018. A video lesson describes the history behind the definition of the kilogram, and the narrator then...
Veritasium
Five Firsts for Mars InSight
Scientists have been studying the surface of Mars for many years ... it's time to know a little something about its interior, too. The Mars Insight launched in November 2018 on a mission to study the happenings inside the most studied...
SciShow
Why Does Venus Spin Backwards?
Our planetary neighbor has some explaining to do! Scientists are mystified by the fact that Venus spins in the reverse direction of all other planets. A thoughtful video lesson explains different hypotheses as well as the science leading...
SciShow
How Can the Universe Be Flat?
Flat, positively curved, or negatively curved ... what is the true shape of the universe? Scientists use many indirect measurements to base their theories on the shape of the universe. Using an installment from the SciShow Space series,...
SciShow
How the US Launched Its First Satellite
Start to finish, the first satellite was an 84-day project. Follow the process in a video lesson presentation from the SciShow Space series. The narrator explains the decision-making process and structure of the satellite as well as the...
SciShow
How Many Galaxies Are There?
Could there really be over 200 billion galaxies? It turns out the number may be closer to two trillion galaxies! A video presentation discusses the existence of galaxies in the universe. The narrator explains how scientists make...
SciShow
The Oldest Planet Ever Discovered
The oldest known planet is more than 12 billion years old! A video lesson explains how unique the planet is and why it intrigues scientists. The instructor describes the recent discovery of the planet and the actual data collected that...
TED-Ed
Why Can't Some Birds Fly?
Back in the day, all birds had the ability to fly. Why would evolutionary adaptations take that away from some species? A video presentation discusses the cost of having the ability to fly and why that feature may not be ideal for...
TED-Ed
What’s the Smallest Thing in the Universe?
Quarks have some interesting features—including their names! Young scholars learn about up, down, strange, charming, bottom, and top quarks in an engaging video presentation. The narrator begins with an overview of molecules and atoms,...
TED-Ed
Why Is Meningitis so Dangerous?
Meningitis is scary and life-threatening—but preventable. Learn the science behind the disease and how to prevent contraction in a three-part lesson. Scholars first view a video describing the characteristics of meningitis and how people...
British Council
Dolphins Know the Best Way to Catch Fish
Humans often struggle to catch fish, but dolphins have the process down to an art. A video explores the brains of the intelligent porpoises, focusing specifically on their superior methods of catching fish. Two reading comprehension...
Corbett Maths
Fractional Equations
Don't let those fractions scare you! A video lesson describes how to solve equations with fraction terms. Beginning with integer denominators and progressing to denominators with linear expressions, the examples illustrate the steps to...
Corbett Maths
Sketching Quadratics
Sketch the graph of quadratic functions using key features as a guide. After a brief discussion about the key features of a parabola, the video instructor completes several examples showing how to graph a quadratic function. Each...
Corbett Maths
Equations Involving Algebraic Fractions (Advanced)
Everyone seems to freeze when they see a fraction! Give your classes a lesson to watch and rewatch until they are comfortable with the process of solving rational equations. A video presenter demonstrates solving two rational equations....
Corbett Maths
Solving Quadratics Graphically – Advanced
Use an understanding of equality to find solutions of quadratics graphically. A well-designed lesson illustrates the relationship between the right and left sides of an equation graphically. With one side quadratic and the other side...
Corbett Maths
Solving Quadratics Graphically
One of the many methods of solving quadratic equations is graphing. A video lesson first demonstrates graphing a quadratic function using an input-output table. After graphing the parabola, the instructor makes the connection between the...
Corbett Maths
Deriving the Quadratic Formula
Formulas don't appear from thin air! Learn how to derive the quadratic formula by completing the square. As the video instructor demonstrates each step of the derivation, the quadratic formula begins to emerge until it is complete in the...
Corbett Maths
Quadratic Formula
When all else fails, use the quadratic formula! A video lesson introduces the quadratic formula to scholars and then demonstrates two problems. One problem results in integer solutions, the other in irrational solutions.