What the heck is dry ice and why is it so spooky? Learn this and more when we investigate phase changes and phase diagrams!

This video discusses Freud's theory of psychosexual development, which claims that our experiences during childhood can lead to fixations and personality traits later in life. It also explains the concept of the unconscious mind and how...

Water in the Air reveals the varied phases of water that surround us, fall on us, travel in air, and serve as a crucial component of the water cycle. Emphasis is on the fact that water in air can be vapor or solid, visible or invisible,...

When you eat a burrito, where does all that matter go? What about when matter changes phases, does any matter appear or disappear? When we talk about this sort of stuff, reality sometimes goes against our intuition, so we'd better make...

What are electrolytes? Yes, they're what plants crave. But they are also ionic solids dissociated in solution, such that they can conduct electrical current. Learn about solutions!

We look at the Green Party's manifesto ahead of the 2019 General Election.

Water on Earth focuses on water as most kids would think about it. We start with water in obvious locations such as oceans, lakes, and rivers. We quickly learn that water can change phase to remain a solid in glaciers. Many kids may be...

NASA’s Moon to Mars exploration program first proposed in 2015 consists of three phases. <br/>

We know that we are made of cells. But we start out as just one tiny little cell in the womb. How does that become enough cells to look like a baby? And how does that baby get enough cells to become an adult? The answer is mitosis! This...

A fact-filled look at 23 of the most important events from man's on-going adventure in space. The beginning of the International Space Station. Space Facts. Part 8

Cellular Reproduction Set: 2. This clip introduces the cell life cycle: focus is on the growth (G1-G2) and synthesis(s) stages of interphase.

Cellular Reproduction Set: 5. This clip reviews the series of events involved in the reproduction of the cell from interphase through mitosis to cytokinesis.

Upon viewing the The Changing Phases of Matter video series, students will be able to do the following: Explain that phases of matter, also called states of matter, are the physical forms matter can take. State the four phases of...

Your cells have to divide when you're growing, to heal wounds, and to replace dead cells. But how do cells know when to divide and when not to divide? We can't have cells just growing willy-nilly! That's what cancer is, and that's bad....

Upon viewing the The Changing Phases of Matter video series, students will be able to do the following: Explain that phases of matter, also called states of matter, are the physical forms matter can take. State the four phases of...

What are the differences between solids, liquids, and gases? In this program students will investigate real-life examples of the various phases of matter. Colorful animations illustrate how these states differ in the movement of...

This live-action video program is about the term phases of matter. The program is designed to reinforce and support a student's comprehension and retention of the term phases of matter through use of video footage, photographs, diagrams...

The cycle of water from the air to the ground to the oceans and back to the air never ends. Water is found in the air, in the ground, in rivers and oceans, and it's found as gas, liquid, and solid. As it moves though phases and locations...

What's the difference between a physical change and a chemical change? What are elements, compounds, pure substances, and mixtures? So many definitions to learn! Don't worry, Professor Dave will take you through the details.

Cellular Reproduction Set: 3. This clip describes the events of the five phases of mitosis: prophase, pro metaphase, metaphase, anaphase and telophase.

Water on Earth focuses on water as most kids would think about it. We start with water in obvious locations such as oceans, lakes, and rivers. We quickly learn that water can change phase to remain a solid in glaciers. Many kids may be...

Meiosis Set: 2. This clip provides a detailed look at the phases of meiosis and the production of haploid sex cells.

This video explains the phases of the Moon and how they are caused by the Moon's revolution around the Earth. The video also highlights the different shapes the Moon appears to have and how they change over time, from a New Moon to a...

Upon viewing the The Water Cycle video series, students will be able to do the following: Define the water cycle as the continual movement of water between earth and the air. Explain that the water cycle consists of three processes:...