Professor Dave Explains
Phylogeny and the Tree of Life
Alright, we've learned about how unicellular organisms came to be, how they became multicellular, and then from those how evolution by natural selection produced all the species in the world today. But there are so many! Millions and...
SciShow
Why Do Bug Bites Itch?
Hank explores a vexing question asked at picnics and beach parties everywhere: Why do bug bites itch? To help you understand the answer, he takes you into the blow by blow of a bug bite which, we warn you, is pretty horrifying.
Communication Coach Alex Lyon
Effective Communication Skills When You're New to a Group or Team
Effective communication skills in groups and teams is really hard when you're new. These three group communication skills will help you jump right in, show effective communication skills, and make a contribution from your first meeting....
Curated Video
Finding the Perimeter of Rectangles Using Area Models
In this video, students learn how to find the perimeter of a rectangle using area models. The teacher explains the concept of perimeter and demonstrates how to count the outer line segments of squares to find the total distance around...
TED-Ed
A Simple Way to Tell Insects Apart
Did you know an insect has unique mouthparts based on what and how it eats? This is a simple way to identify the order an insect belongs to. Watch a video that explains the interesting world of insect mouthparts.