Join the Amoeba Sisters as they introduce the cardiac conduction system! This video mentions conductive cardiac cells (focusing on pacemaker cells) in the SA and AV nodes and discusses general steps of spontaneous depolarization. It also...

Join Pinky and Petunia in a cell types review game! This review game focuses on comparing cell characteristics of animals, plants, fungi, "protists," archaea, and bacteria. Clues may include prokaryote/eukaryote, autotroph/heterotroph,...

Want a Pineapple? If you want a pineapple, it's possible you can just run down to the store and get one. But, if you wanted to grow one, that's a lot more difficult depending on where you live. In this episode of Crash Course Kids,...

Where does water come from? If you turn on the faucet, there's water. But it goes on an incredible journey to get there. Today, Jessi and Squeaks learn about all the places we can find water.

Bill and Webb want to know: What's stronger, wind or water? Both of them can change the shape of the land. So which one does it better?

Jessi and Sam the Bat talk about the biggest volcano ever that we know of. And it's not on Earth. It's Olympus Mons, on the planet Mars!

Squeaks is back from his trip around the world! In this episode, he and Jessi discuss the second stop on his trip: Fiordlands National Park (aka Te Rua-o-te-moko) in New Zealand (aka Aotearoa)<br/>

Water makes an amazing journey around the world called the water cycle. Squeaks and his friends put on a play to learn all about it!

Squeaks is back from his trip around the world! In this episode, he and Jessi discuss the final stop on his trip: Vatnajökull National Park in Iceland.

A new friend Savannah and Sam learn about different kinds of igneous rocks, which form after liquid magma or lava cools into solid rock.

Squeaks is back from his trip around the world! In this episode, he and Jessi discuss the first stop on his trip: Yellowstone National Park.

Squeaks is heading on a trip around the world! He's going to experience so many things, using senses he didn't even know he (or his human friend Jessi) has! In this episode, he learns about senses beyond the common 5 (sight, hearing,...

After learning about igneous and sedimentary rocks, Savannah and Sam learn about the final main kind of rock: metamorphic rocks. And they review how each of these rocks can turn into another!

Squeaks is looking to plan his next vacation. Jessi tells him all about the amazing volcanoes you can find in

Squeaks is heading on a trip around the world! He's going to see so much, and wants Jessi to experience those sights, too. In this episode, he learns about how humans (and a couple of other animal guests) see.

Jessi and Sam learn about sedimentary rocks and show how you can use vinegar to identify a piece of limestone.

Squeaks is heading on a trip around the world! He's going to hear so many cool sounds, and wants Jessi to experience them, too. In this episode, he learns about how humans (and a couple of other animal guests) hear.

Jessi and Sam the Bat learn about every kind of volcano. Some erupt suddenly and some erupt slowly. Some are tall, some aren't big mountains at all, and some stopped erupting a long time ago. But they're all volcanoes!

In this SciShow Kids compilation, Jessi and Squeaks learn about the amazing geological processes that form mountains and volcanoes.

Sometimes feeding just one child can seem challenging. Not for entrepreneur Wawira Njiru, who’s gone from serving lunch to 25 children from a makeshift kitchen to establishing her nonprofit, Food4Education, as a cornerstone of Kenya’s...

In this menstrual cycle video, explore the ovarian cycle and uterine cycle with the Amoeba Sisters! This video will walk through major events in phases of the ovarian cycle (follicular phase and luteal phase) and phases of the uterine...

Join the Amoeba Sisters as they introduce the basics about cladograms and phylogenetic trees. The Amoeba Sisters walk through the process of building a basic cladogram and mention vocabulary such as: shared ancestral character, shared...

Join the Amoeba Sisters as they introduce angiosperms (flowering plants) before exploring flower parts, pollination, and double fertilization in angiosperms! This video also talks about the importance of pollinators.

Join the Amoeba Sisters as they explore the action potential. This video discusses resting membrane potential before going into the phases of the action potential including vocabulary such as depolarization, repolarization, and...