In this video Paul Andersen answers the very simple question: What is cancer? He explains how damage to the DNA can create uncontrolled cell growth. He explains how malignant tumors can spread the disease throughout the body and gives...

In this video Paul Andersen explains how the resources required for survival come from the Earth. The resources are not evenly distributed on the planet and neither are the humans. According to the NGSS we need to limit the use of...

Paul Andersen briefly surveys members of the Domain Animalia. He begins with brief description of the phylogeny of animals. He then describes the characteristics of all animals, heterotrophy, multicellularity, motility and blastula. ...

Traditionally, geography is studied as two interconnected parts: physical geography and human geography. For the first half of this series, we will be focusing on physical geography, which is all about recognizing the characteristics of...

Mr. Andersen shows you how to determine if a bond is nonpolar covalent, polar covalent, or ionc.

Hank begins teaching you about your endocrine system by explaining how it uses glands to produce hormones. These hormones are either amino-acid based and water soluble, or steroidal and lipid-soluble, and may target many types of...

Before empires and royalty, before pottery and writing, before metal tools and weapons – there was cheese. As early as 8000 BCE, Neolithic farmers began a legacy of cheesemaking almost as old as civilization. Today, the world produces...

Paul Andersen describes the important features of the skeletal system. He starts by comparing and contrasting endoskeletons and exoskeletons. He then explains how the human skeleton provides support, movement, storage, blood production...

Join Jessi this week at the fort and learn about the unexpectedly awesome organism that's made up of two living things: LICHEN!

New ReviewIn this video I am going to cover the most common percentage math problems you need to know and should expect to see.

New ReviewThis colorful program investigates the fascinating topic of physical and chemical properties of matter. Numerous real-life examples of properties highlight the many different types of properties. The video correlates to the Next...

New ReviewThis fascinating program helps students answer the question - What is Matter? Colorful video footage introduces students to the fact that not all matter is the same. The video correlates to the Next Generation Science Standard for Middle...

Learn some wild facts about sloths, the world's slowest mammal.

This video uses a cake analogy to describe Earth's structure. It compares the Earth's crust to cake batter, the mantle to a mixed ingredient layer, and the core to the sweet, hot center of the cake—highlighting the different types of...

In this video students will observe that regardless of the type of change that occurs in heating, cooling, or mixing, the total weight of matter is conserved. A hands-on demonstration helps students set-up their own activity to prove...

One thing we’ve heard from many of you is that this show is your sleep show, that soothing bit of media you put on when you need to slow down your brain and drift off. We take that as a huge compliment. It’s nice to know we can be a...

Coming up with a research question is one of the most important parts of a research project. It's also one of the hardest parts. In this video, we explain how to write a strong research question. We also explore the difference between...

China has one of the world’s most ancient cultures, yet it’s only since 1978 that foreigners have been welcomed. This long history of cultural isolation helps explain the attitudes Chinese people have toward foreigners, which many...

In this video, we introduce dynamic routing protocols and their role in automating route updates.

This video elaborates on what encryption is, the types of encryptions, and how to differentiate between them.

This video elaborates on the different types of hackers based on their hacking skills and their level of hacking.

In this video, explore PPPoE, a protocol used to establish direct connections over Ethernet for WAN links.

In this video, we will explore the course's prerequisites and discuss the course content and the concepts that will be covered in this course.

Discover the different types of files in Linux, from regular files and directories to symbolic links and special files.