Video+3

Video 3: "Algebra I"
I. Before you watch the video answer the following questions. The title of the video is "Algebra I" What do you think this video will be about? I think the video will explain how to use basic mathematical operations such as addition, subtraction, multiplication and division to solve mathematical equations.

Mention five words you think you might listen to in the video. Operations Mathematics Addition Subtraction Multiplication Division

II. Now click on the following link and watch the video. While watching, please answer the following questions: [] 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? The three types of equations are: a. Equations with a variable on one side with a fraction. b. Equations with variables on both sides using the distributive property. c. Equations with multiple variables for one of the variables.

2. What are the two keys he mentions for solving any equation? The two keys that refer__s__ to solve any type of equation is to use the opposite of a number to become zero, that is, if the number is negative the opposite is positive and vice versa if the number is positive, the opposite is negative and second key is to use the inverse of a number to make it one, that is, given an integer it is inverse will be one divided by the number given, if on the contrary, the number is a fraction, the reverse will be the fraction inverted.

3. a. Mention the steps he takes to solve the 1st problem. The steps are: 1. He R ecognize  **S**  which is the variable that must clear to find it is value. 2. He Found the opposite of "minus two," and once found, added "plus two" on both sides of the equality. 3. He found the inverse of "one divided by five," which is "five divided by one", then multiply that fraction by one to make it a positive one and **HE** finally multiply **ied** this result on both sides of the equality.

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

4. a. Mention the steps he takes to solve the 2nd problem. The steps are: 1. He R ecognize which is the variable that must clear to find it is value. 2. He noted that on one side of equality should apply the distributive property, which proceeds to use. 3. A cross equal sum of similar terms, that is those with the variable "x". 4. P ut all the terms with variable "x" on the side of equality through the method of the opposite and put all the separate terms on the other side of equality through the same method. 5. Finally, to clear the "x" multiply both sides of the equation by the inverse of "five", it would be "one divided by five".

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

5. a. Mention the steps he takes to solve the 3rd problem. The steps are: 1. He Recognize which is the variable that must clear to find it is value. 2. Then all the terms that do not have the variable "w" passed to the other side of equality with the opposite method. 3. F inally, to clear the variable "w", multiplied both sides of the equation by the inverse of "two" which is "one divided by two" and simplified.

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

6. a. Mention the steps he takes to solve the 4th problem. The steps are: 1. He Recognize which is the variable that must clear to find it is value. 2. Multiply both sides of the equation by the inverse of "one divided by d" which is "d divided by one". 3. He applied a method of opposite number, in this case "plus c", whose opposite is "minus c", and added to both sides of the equality.

b. What kind of equation is this one? Equation with multiple variables for one of the variables with a fraction.

c. What’s the difference between problem 3 and problem 4? The difference between the problem 3 and the problem 4, is that the problem 3 is the resolution of a linear equation with several variables, while the problem 4 is the resolution of an equation with fraction of several variables.

7. Did you like the video? Yes I liked the video because it is quite illustrative, easy to understand and useful in solving mathematical equations.

8. What new things did you learn? I did not learn anything new because that issue dominates since high school, however, I refreshed the knowledge already acquired.