In this video, we will discuss the structure of the sarcomere and see how that relates to sarcomere shortening (with animation).

An honest look at vectors vs. scalars in rotational motion equations. Want Lecture Notes? <b<br/>r/>
Content Ti<br/>mes:
0:00<br/> All the equations
0:51 Common mistake
3:28 The correct equations

What are the force and acceleration vectors that are involved in centripetal acceleration? Using live action real world events and animated diagrams, this program explores this and other questions related to centripetal force and...

The video discusses rates of change in nonlinear graphs and the two ways to calculate the rate of change: average rate of change and instantaneous rate of change. The presenter provides examples, such as a rocket taking off and the...

The Earth-observing satellite Terra celebrates its tenth anniversary in 2009. This video highlights how Terra has helped us better understand our home planet.<br/>
Or get tweeted by NASA:

What are the issues with the Bohr model of the atom (Neils Bohr)? Some issues with this mode helped early physicists invent and develop the discipline of quantum mechanics.<br/>

Overview of the concept of refraction of light.

Describes the working principle of a simple linear regression algorithm with an example.

Students sometimes have a difficult time understanding what acceleration in meters per second squared really means. Therefore, I present acceleration as meters per second every second instead. This helps students gain a better...

👉 Learn how to find the rate of change from graph. The rate of change is the rate at which y-values are changing with respect to the change in x-values. To determine the rate of change from a graph, a right triangle is drawn on the graph...

This video is a lesson on defining linear functions by analyzing graphs and tables of the form y = mx + b. The video explains how to find the rate of change of a linear function and how adding or subtracting values to the X term does not...

Arctic sea ice reached its annual minimum extent Sept. 19, and then again on Sept. 23, 2018.



NASA works with the National Snow and Ice Data Center to track sea ice in the Arctic as it grows to a maximum extent through the...

The video explains the three main states of matter, which are solids, liquids and gases, and their properties. The concept of state symbols is introduced to indicate what state chemicals or particles are in a reaction. The video also...

If you have ever torn up a piece of paper or seen ice melt, then you have witnessed physical changes. This fascinating program helps students understand some of the different ways matter changes physically. Vivid animations also...

It explains uniform circular motion and its examples. It talks about centripetal and centrifugal force.

Why do objects move in certain ways? Students will learn that English mathematician Isaac Newton figured out the basic laws that govern how objects move. The program explains the difference between speed, velocity and acceleration and...

Never taken physics before? Want to learn the basics of physics? Need an AP Physics 1 review before the exam? This course is for you! Exercises in this video: PROBLEM 1 A girl is riding her bike with a constant velocity of 10 m/s. How...

It's an age-old debate: The Book vs. The Movie Since the dawn of cinema, film has been sort of the little brother of the more heady, intellectual medium of novels. And many film adaptations of literature leave viewers and critics...

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

In this video, the teacher explains how to subtract rational expressions by finding a common denominator and then simplifying the fractions. They use examples and visuals to demonstrate the process and emphasize the importance of...

Learn about placement in American English.

This video provides an introduction to El Nino and La Nina, two climate patterns in the Pacific Ocean. It explains how these patterns occur, their impacts on global weather patterns, and discusses whether 2021 and 2022 are El Nino or La...

In this lesson, students will learn how to create and graph relationships using quadratic functions. By exploring the example of owning a movie theater and determining the best ticket price, students will understand how changes in price...

In this video, the teacher explains how to graph quadratic equations using vertex form and the leading coefficient. They demonstrate how to complete the square and find the vertex of the equation, and then use the leading coefficient to...