This is a song to help you learn the German alphabet and the sounds that each letter makes. Each letter has its own sentence full of sounds that letter makes. I hope you enjoy this song and share it with your friends. <b<br/>r/>

Air Handling Units. In this video we'll learn how air handling units or AHU's work. Starting with simple typical examples and increasing to more advanced designs. Covering ductwork, AHU, centrifugal fan, cooling coil, heating coil,...

Variable air volume hvac system basics. In this video we look at the basics of VAV ventilation system covering vav variable air volume systems used in hvac ventilation design, vav terminals, ahu air handling units, fan assisted vav...

All the people in the world live on the same planet, which we call home. This program explains why Earth is precious and how it is being damaged. Special attention is paid to how we can conserve natural resources and care for the planet.

This video serves as English listening comprehension practice for lower-level students. In this video, a native English speaker talks slowly and clearly about the topic of nature. The subtitles are included at the bottom of the screen to...

Today you’ll learn possible reasons for why listening scores may go down, and how to make sure this doesn’t happen to you.

Introductions are important. That’s why we’re keeping things simple. Sail into the Preliminary Chemistry course with a bunch of rowdy pirates. This lesson will classify matter as pure substances and mixtures. Definitions included:...

After being canceled during the pandemic, many high school sports are starting up again. This audio story focuses on a high school girls’ tennis team in California where athletes are both nervous and excited to resume play. Listen to...

This video is a lesson on how to support an opinion with strong reasons by adding evidence, such as facts and details. It provides examples and guidance on how to make your reasons clear and based on facts, ultimately making your opinion...