In this video Paul Andersen explains how the quantum mechanical model of the atom refined the shell model. Uncertainty of the position of the electron as well as spin forces chemists to create an improved model. In this model the...

New ReviewThis video explores what makes a fossil different from the remains of something made more recently. Exciting images of fossils help explain the different types of fossils. The video correlates to the Next Generation Science Standard for...

🎉 Let’s learn the SH sound together! In this fun and interactive video, kids will explore the SH digraph through songs, games, flashcards, and more. Perfect for kindergarten and early elementary learners, this phonics lesson helps...

Explain how to modify default file permissions using umask, a crucial skill for maintaining system security.

Navigate and utilize the shell history feature to recall, edit, and rerun previous commands, enhancing your command-line proficiency.

Utilize case statements for streamlined decision-making processes in your scripts, handling multiple conditions neatly.

Implement do-while loops in your scripts for tasks that require at least one execution before condition evaluation.

Harness the power of for loops in scripting to repeat tasks efficiently, saving time and reducing manual effort.

Start your scripting journey with basic shell scripts, focusing on simple commands and scripts to automate routine tasks.

Learn the basics of shell scripting, enabling you to write scripts to automate tasks and solve complex problems efficiently.

Discover the various shells available in Linux, such as Bash, Tcsh, and Zsh, and their unique features and applications.

Uncover the function and importance of a shell as the user interface to the Linux kernel, facilitating command execution.

Explore the core of Linux, the kernel, understanding its role and how it interacts with the system and user commands.

Utilize the ps command to monitor active processes, a crucial skill for troubleshooting and system analysis.

Summer Talking Flashcards & Fun Games for Kids



Join us for a fun summer learning adventure! This video includes 24 talking flashcards plus 6 exciting games: Guess The Summer Sound, Summer Rhyming Riddles, What’s...

Fireworks have amazed people for over a thousand years, combining chemistry and celebration in a dazzling display of sound and light. First invented in ancient China, fireworks spread across the world, lighting up festivals, religious...

Why is carbon the foundation of life? All life is based on carbon chemistry, But carbon is not the most abundant element on earth. 20% of our body is made up of carbon, but it comprises less than 1% of the mass of the...

Howcast - Learn about the personality traits of people born under the Cancer zodiac sign from astrology expert Lawrence Greco in this Howcast video.

Howcast - Learn about the bass drum from drum teacher Jason Gianni in this Howcast drum video.

Howcast - Check out part 9 of this walkthrough for the third person action shooter "Warhammer 40K Space Marine" and beat Chapter 1 with this online demo.

Howcast - Check out part 10 of this walkthrough for the third person action shooter "Warhammer 40K Space Marine" and beat Chapter 1 with this online demo.

Howcast - A coin instantly dematerializes. You can not only see the invisible coin, but also pluck it out of thin air with your magic fingers.

Howcast - Learn how to make a fondant turtle from pastry chef Angela Cuervo, winner of Food Network's Sweet Genius, in this Howcast video.

Howcast - Learn how to say "my name is" in Mandarin Chinese in this online language lesson from Howcast.