Video+2

VIDEO 2. "Algebra I"
I. Before you watch the video answer the following questions:

 //- What do you think this video will be about?//

I think it is generally about the explanation of this branch of math, and specifically about the solution of math problems, equations and formulas that simplifies our calculus. // - Mention five words you think you might listen to in the video. // Math Formula Problems Equations Numbers

II. While and after watching, please answer the following questions: //1. ////Mr. Mc Call is solving three types of equations in this video. Which are those types of equations? //

- Equations with only one variable. - Equation with variables in both sides. - Equations with multiple variables.

// 2. What are the two keys he mentions for solving any equation? //

a. The additive inverse of a number: means that if I have number 6 its additive inverse is -6 which combining both is equal to zero. <span style="font-family: 'Times New Roman','serif'; font-size: 12pt; line-height: 115%; margin: 0cm 0cm 0pt 64.35pt; text-indent: -18pt;">b. The reciprocal of a number: means that if I have 8 his reciprocal is 8 divided by 8 which is equal to 1.

<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; line-height: 115%; margin: 0cm 0cm 0pt 1cm;"> 3. a. Mention the steps he takes to solve the 1st problem.

<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; line-height: 115%; margin: 0cm 0cm 0pt 42.55pt;">First, he looks at the equation and finds out where is the variable X. The next thing he does is move all the negative number to the other side; he does this by adding the same number in both sides of the equation. Then, he just try to get rid of the number that is dividing the variable X and he does it by using the multiplication of the same number in both sides too. Finally he has the answer of the variable X.

//<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; line-height: 115%;">b. What kind of equation is this one? //

<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; line-height: 115%; margin: 0cm 0cm 0pt 46.35pt;">An equation with one variable.

//<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; line-height: 115%;"> 4. a. Mention the steps he takes to solve the 2nd problem //<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; line-height: 115%;">.

<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; line-height: 115%; margin: 0cm 0cm 0pt 46.35pt;">He uses the distributive property, multiplying the number that is outside the parenthesis to what’s inside it. Then, in the other side he combined the variables with X. After this he leaves the variables on one side and the constants in the other side of the equation, using addition and division.

//<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; line-height: 115%;">b. What kind of equation is this one? //

<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; line-height: 115%; margin: 0cm 0cm 0pt 46.35pt;">An equation with variables in both sides.

//<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; line-height: 115%;"> 5. a. Mention the steps he takes to solve the 3rd problem? //

<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; line-height: 115%; margin: 0cm 0cm 0pt 46.35pt;">He solves the equation for one of the variables (W). He identifies this variable in the equation and put down the other ones (P and L) on the other side using the division in both sides to leave the variable for what we are solving (W) alone.

//<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; line-height: 115%;">b. What kind of equation is this one? //

<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; line-height: 115%; margin: 0cm 0cm 0pt 46.35pt;">An equation with multiple variables.

//<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; line-height: 115%;">6. a. Mention the steps he takes to solve the 4th problem //

<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; line-height: 115%; margin: 0cm 0cm 0pt 46.35pt;">As he is solving the equation for B, he first identifies this variable and tries to leave it on one side alone, so he multiplies in both sides for D and subtracts C in both sides too. And finally he has the result.

//<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; line-height: 115%;">b. What kind of equation is this one? //

<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; line-height: 115%; margin: 0cm 0cm 10pt 35.45pt;">An equation with multiple variables.

//<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; line-height: 115%;">c. What’s the difference between problem 3 and problem 4? //

<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; line-height: 115%; margin: 0cm 0cm 0pt 35.45pt;">The difference is that in problem 4 the side where is the variable to solve is all divided by another variable in a fraction form, while the problem 3 is lineal.

//<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; line-height: 115%;">7. Did you like the video? //

<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; line-height: 115%; margin: 0cm 0cm 0pt 35.45pt;">Yes I likeD, it is a good way to learn and understand better how to solve and equation.

//<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; line-height: 115%;">8. What new things did you learn? //

<span style="font-family: 'Times New Roman','serif'; font-size: 12pt; line-height: 115%; margin: 0cm 0cm 0pt 35.45pt;">I learnED to have a better sequence or order when I have to solve a math problem.