Predict the number of times a spinner will land on an elephant.

Sal analyzes a couple of systems of equations and determines whether they have the same solution as a third given system.

Understanding the process for solving linear equations

Sal is given a triangle on the coordinate plane and the definition of a translation, and he draws the image of the triangle under that translation.

Three example problems involving isosceles and equilateral triangles (partly taken from Art of Problem Solving, by Richard Rusczyk).

Sal is given a right triangle with an acute angle of 65������������ and a leg of 5 units, and he uses trigonometry to find the two missing sides.

Learn how to write simple algebraic expressions.

http://www.engvid.com You see them all the time, but do you know how to use them correctly? In this lesson we go over the basic punctuation marks used to end a sentence. I also teach you to identify and avoid the run-on sentence, which is a common mistake ESL students and native speakers make in their writing. Watch this lesson to learn the quick and easy rules for using the period, exclamation mark, and question mark! Then take the quiz on it here: http://www.engvid.com/learn-punctuation-period-exclamation-mark-question-mark/TRANSCRIPTHi. Welcome to www.engvid.com again. My name 's Adam. Today, I 'm responding to some requests for punctuation lessons. So, today 's lesson is about punctuation. I 'm going to focus on the period, the exclamation mark, and the question mark. Now, you 're thinking: why am I beginning with these three? Because these are the ends of sentences. Right? These always come at a very specific point in the sentence, always at the end, always with a clear purpose.What is the purpose? A period ends a sentence. Seems simple enough, everybody knows this. Correct? But it 's not that simple. Many, many times I 've seen students writing and not putting the period in the correct place. What...Another thing you have to remember about the period is what comes after it is always a capital letter. Okay? Many people forget the capital after a period. A period ends a sentence which means it ends a complete idea. Whatever comes after the period is already a new idea. Of course, one idea flows to the next idea; one idea builds on the previous idea, but they are two separate ideas. When you have completed your sentence, when you have completed your idea - put a period. And British people call this:

Multiplying Polynomials - Introduction an educational video resources on math.

This Khan Academy video offers more information on how to add with unlike denominators and contains a few sample problems with a step-by-step walkthrough on solving these equations.