Video exercises / Lessons

Continuing with last week's introduction of calculus, Shini leads us through the ways that integrals can help us figure out things like distance when we have several other key bits of information. Say, for instance, you wanted to know how far your window was off the ground. By using integrals, a tennis ball, and a stop watch, you can figure that out! It's all here in this episode of Crash Course Physics!

Try this practice test to see how prepared you are for a biology exam. Whether you are in high school or college, you are likely to have a biology requirement. Biology tests often cover such subjects as physiology, morphology and reproduction of living organisms.

In this class we will discuss the grammar topic - Present Perfect (have you ever...).

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."

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Shrek lesson in GLOW marathon for teenagers

In this class we will discuss relocation, tips how to relocate and what to do before it

Hay una canción de los Beatles que se titula Christmas time is here again. ¡Es decir, la Navidad está aquí otra vez! La Navidad en España se vive con intensidad. Si eres estudiante de español, es importante que entiendas los conceptos básicos.

Get ready for your trip to Spain with this class- pluses, minuses, food and rules