Video+3

Video 3: "Algebra I"
The title of the video is "Algebra I"
 * I. Before you watch the video answer the following questions.**

I think that the video will be about some fundamental aspects of algebra, maybe some mathematical concepts that are very important for understanding of algebra.
 * What do you think this video will be about?**

variable ,symbols, equation, inequality, coefficient.
 * Mention five words you think you might listen to in the video.**

[] Image taken from: [] on August 12th. 2009 **1. Mr. Mc Call is solving three types of equations in this video. Which are those types of equations?**
 * II. Now click on the following link and watch the video. While watching, please answer the following questions:**
 * Equations with one variable on one side with a fraction
 * Equations with variables on both sides using the distributive property
 * Equations with mulitple variables for one of the variables

The two keys are 1) the additive inverse, which means add the inverse of a number to the same number to obtain zero 2) the reciprocal of a number, which means divide this number for the same number to obtain one
 * 2. What are the two keys he mentions for solving any equation?**

High light the variable "x" to know where it is; add 2 on both sides of the equation; he multiplied the reciprocal of -1/5, this is -5/1 on both sides
 * 3. a. Mention the steps he takes to solve the 1st problem.**

Equation with one variable on one side with a fraction
 * b. What kind of equation is this one?**

First, he solved by the distributive property 4(x-5), second, he combined the terms with X, later he add -4x on both sides of the equation, therefore he add 2 on both sides and finally he divided by 5 on both sides.
 * 4. a. Mention the steps he takes to solve the 2nd problem.**

Equation with variables on both sides using the distributive property
 * b. What kind of equation is this one?**

He add -2L on both sides of the equation, he divided everything by 2 and simplified
 * 5. a. Mention the steps he takes to solve the 3rd problem.**

Equation with mulitple variables for one of the variables
 * b. What kind of equation is this one?**

First, he multiplied by the reciprocal of 1/d on both sides of the equation, which is just d, second, he add on both sides the additive inverse of c which is -c
 * 6. a. Mention the steps he takes to solve the 4th problem.**

Equation with mulitple variables for one of the variables
 * b. What kind of equation is this one?**

__ **T** t__he fractions, in the problem 3 there were not fractions, but in the problem 4 there was a fraction and one had to solved it for B
 * c. What’s the difference between problem 3 and problem 4?**

Yes, of course, it was really didactic
 * 7. Did you like the video?**

Nothing new, I learned some time ago how to solve those types equations. But for sure,  I would have liked to learn in this way so interactive.
 * 8. What new things did you learn?**