Howard Hughes Medical Institute
The Making of the Fittest: Got Lactase? The Co-evolution of Genes and Culture
Got milk? Only two cultures have had it long enough to develop the tolerance of lactose as an adult. Learn how the responsible genes evolved along with the cultures that have been consuming milk. This rich film is supplied with a few...
TED-Ed
Cambridge Ideas - How Many Lightbulbs?
Humans have become addicted to fossil fuels. From pumping oil into our cars, to burning natural gas to heat our water, or using coal to create electricity that lights our homes, we are constantly relying on these nonrenewable resources....
TED-Ed
Why Is There a "b" in Doubt?
Many doubt the reasoning for having a b in doubt, but do they know the whole story? Pupils can watch as a Latin word becomes the English doubt. The narrator explains the etymology of doubt, emphasizes the importance of meaning and...
TED-Ed
Make Sense of Spelling
Help your pupils comprehend how words are put together. The video takes the history of words into consideration as the narrator investigates the word one and words related and connected to one. Using an onion as a metaphor, the video...
Sophia Learning
Sophia: Dashes and Hyphens 3
A screencast lesson introducing the usage of dashes and hyphens and explaining how to create both punctuation marks in a Word document. [5:07]
Khan Academy
Khan Academy: Ellipses
This video tutorial explains the purpose of using ellipses when punctuating sentences.
Khan Academy
Khan Academy: Introduction to the Semicolon
Paige introduces a piece of punctuation called the semicolon; this punctuation can link closely related independent clauses together in a sentence.
Khan Academy
Khan Academy: Dashes
Dashes are like little actors--they can behave like colons, pairs of commas, or parentheses. Learn how to use them in this video!