Video / Lessons

Explore the lytic and lysogenic viral replication cycles with the Amoeba Sisters! This video also discusses virus structures and why a host is critical for viral reproduction. Expand details for table of contents and further reading suggestions! This updated video replaces our older virus video

What is torque? This is one of those things that you may have heard about in passing but never really understood. In this episode of Crash Course Physics, Shini sits down with us to discuss what torque is, how it works, why it works, and what it all has to do with this thing called "Moment of Inertia."

Today, we continue our exploration of fluids and fluid dynamics. How do fluids act when they're in motion? How does pressure in different places change water flow? And what is one of the motion annoying things about filming outside on a nice day? I'll give you a hint on that last one... it's lawn mowers.

How the Brain Works These brief videos provide an introductory appreciation of how we learn skills and information, move, think, feel, speak and remember. They are brought to you by the UCLA Brain Research Institute and by Bruce H. Dobkin, MD, who directs the neurorehabilitation program in the Department of Neurology at UCLA. The videos especially aim to reach out to students in grade school to stir their interest, and to people with disabilities in walking, using an affected upper extremity, and loss of memory from neurological diseases such as stroke, brain trauma, tumors, multiple sclerosis, cerebral palsy, Parkinsons, and Alzheimers disease.

In this episode of Crash Course Physics, Shini is very excited to start talking about Fluids. You see, she's a Fluid Dynamicist and Mechanical Engineer, so fluids are really important to her. Actually they're really important to anyone studying physics. So, let's start down this path of understanding, not only how fluids work, but what they are!

Всем привет! В этом видео я предлагаю логику запоминания иероглифов. Это не единственный способ запоминания китайских иероглифов, но символьный - самый рабочий. А также предлагаю способ, как запомнить тоны, ведь они всегда очень важны. Приятного просмотра!

Всем привет! Многие не знают, как и где употреблять частицу 呢 в китайском предложении. Давайте разбираться вместе. Пиши свой пример в комментариях. Приятного просмотра!

Всем привет! И сегодня снова грамматика. Разбираем употребление 了 как частицы, в конструкциях и так далее. Приятного просмотра.

Всем привет. Добро пожаловать! Я не умею пока вот это всё писать в описании...поэтому просто наслаждайтесь :)

We will discuss life moments and revise Past simple and Past Perfect

In this class we will revise conditionals + linking words

Bei dem Osterfest geht es um die Kreuzigung von Jesus Christus und um seine Auferstehung von den Toten. Es ist ein religiöses Fest.

Revision class 3: past tenses, used to, prepositions

Sport In Deutschland interessieren sich sehr viele Menschen für Sport. In den Zeitungen, im Radio und im Fernsehen wird regelmäßig über Sport berichtet.

In this class we will discuss Global warming and learn what is Second Conditional

In this video we are going to learn the farm animals in spanish. Spanish vocabulary for children. vaca (cow), perro (dog), gato (cat), oveja (sheep), gallo (cock), cerdo (pig), caballo (horse), pato (duck), burro (donkey), gallina (chicken)

Present Continuous Если глагол оканчивается на –е, то при добавлении –ing она исчезает: come – coming Если глагол состоит из одного слога, и гласная в нем краткая, то конечная согласная удваивается: sit – sitting

A few years ago there were lots of lightbulb jokes in English. You probably had them in your language too. Here is an example. How many policemen/civil servants/school teachers does it take to change a lightbulb? Five – one to stand on a table holding the lightbulb, and four to pick the table up and turn it round. Some people find these jokes very funny. Other people don't think they are funny at all.

In this class we wil discuss career opportunities and revise modal verbs can, could, would