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 that this video is about the operation of equations or numbers starting from the rules of the algebra.
 * Great Job... [[image:3dpr1noel.gif]]

Mention five words you think you might listen to in the video. · Equation · Number · Negative · Positive · Plus.  <span style="color: fuchsia; font-family: 'Arial','sans-serif'; font-size: 12pt; line-height: 150%;">II. Now click on the following link and watch the video. While watching, please answer the following questions: <span style="color: blue; font-family: 'Arial','sans-serif'; font-size: 12pt; line-height: 150%;">[]

Image taken from: [] on August 12th. 2009

<span style="color: fuchsia; font-family: 'Arial','sans-serif'; font-size: 12pt; line-height: 150%;">1. Mr. Mc Call is solving three types of equations in this video. Which are those types of equations? <span style="color: #000000; font-family: 'Arial','sans-serif'; font-size: 12pt; line-height: 150%;">In the first equation he is solving an equation with a variable on one side with a fraction, in the second he is solving an equation with variables on both sides using the distributive property and finally in the third that is the most difficult he is solving an equation with multiple variables for one of the variables. <span style="color: fuchsia; font-family: 'Arial','sans-serif'; font-size: 12pt; line-height: 150%;"> 2. What are the two keys he mentions for solving any equation? <span style="color: #be5ffc; font-family: 'Arial','sans-serif'; font-size: 12pt; line-height: 150%;"> <span style="color: #000000; font-family: 'Arial','sans-serif'; font-size: 12pt; line-height: 150%;">The first key is the inverse, in this case any number plus the inverse equal zero. The second key is the reciprocal, in this case is any number multiply the reciprocal equal one. For example, reciprocal of 5 is 1/5. <span style="color: fuchsia; font-family: 'Arial','sans-serif'; font-size: 12pt; line-height: 150%;">

<span style="color: fuchsia; font-family: 'Arial','sans-serif'; font-size: 12pt; line-height: 150%;">3. a. Mention the steps he takes to solve the 1st problem. <span style="font-family: 'Arial','sans-serif'; font-size: 12pt; line-height: 150%;">1.<span style="font-family: 'Times New Roman'; font-size-adjust: none; font-size: 7pt; font-stretch: normal; font-style: normal; font-variant: normal; font-weight: normal; line-height: normal;"> He searches who is the variable 2.<span style="font-family: 'Times New Roman'; font-size-adjust: none; font-size: 7pt; font-stretch: normal; font-style: normal; font-variant: normal; font-weight: normal; line-height: normal;"> He founds the inverse of -2 (negative two), and he added the inverse number on both sides of equality because 2+(-2)=0. 3.<span style="font-family: 'Times New Roman'; font-size-adjust: none; font-size: 7pt; font-stretch: normal; font-style: normal; font-variant: normal; font-weight: normal; line-height: normal;"> He founds the reciprocal of (-1/5), and he multiplies this reciprocal on both sides of equality because (-1/5) multiplied by (-5/1) is equal one. 4.<span style="font-family: 'Times New Roman'; font-size-adjust: none; font-size: 7pt; font-stretch: normal; font-style: normal; font-variant: normal; font-weight: normal; line-height: normal;"> Finally the X is equal to negative eighty. <span style="font-family: 'Arial','sans-serif'; font-size: 12pt; line-height: 150%;"> b. What kind of equation is this one? <span style="color: #000000; font-family: 'Arial','sans-serif'; font-size: 12pt; line-height: 115%;">This equation is with a variable on one side with a fraction.

<span style="color: fuchsia; font-family: 'Arial','sans-serif'; font-size: 12pt; line-height: 150%;">4. a. Mention the steps he takes to solve the 2nd problem. <span style="font-family: 'Arial','sans-serif'; font-size: 12pt; line-height: 150%;">1.<span style="font-family: 'Times New Roman'; font-size-adjust: none; font-size: 7pt; font-stretch: normal; font-style: normal; font-variant: normal; font-weight: normal; line-height: normal;"> He searches who is the variable 2.<span style="font-family: 'Times New Roman'; font-size-adjust: none; font-size: 7pt; font-stretch: normal; font-style: normal; font-variant: normal; font-weight: normal; line-height: normal;"> He solves 4(x-5) with the property distributive. 3.<span style="font-family: 'Times New Roman'; font-size-adjust: none; font-size: 7pt; font-stretch: normal; font-style: normal; font-variant: normal; font-weight: normal; line-height: normal;"> He places all the variables of the same side and the constants of the other side of the equality. 4.<span style="font-family: 'Times New Roman'; font-size-adjust: none; font-size: 7pt; font-stretch: normal; font-style: normal; font-variant: normal; font-weight: normal; line-height: normal;"> He founds the reciprocal of 5, and he multiplies this reciprocal on both sides of equality because 5 multiplied by (1/5) is equal one. 5.<span style="font-family: 'Times New Roman'; font-size-adjust: none; font-size: 7pt; font-stretch: normal; font-style: normal; font-variant: normal; font-weight: normal; line-height: normal;"> Finally the X is equal to negative eighty divided by five. <span style="color: fuchsia; font-family: 'Arial','sans-serif'; font-size: 12pt; line-height: 150%;"> b. What kind of equation is this one? <span style="font-family: 'Arial','sans-serif'; font-size: 12pt; line-height: 150%;">This equation is with variables on both sides using the distributive property.

<span style="color: fuchsia; font-family: 'Arial','sans-serif'; font-size: 12pt; line-height: 150%;">5. a. Mention the steps he takes to solve the 3rd problem. <span style="font-family: 'Arial','sans-serif'; font-size: 12pt; line-height: 150%;">1.<span style="font-family: 'Times New Roman'; font-size-adjust: none; font-size: 7pt; font-stretch: normal; font-style: normal; font-variant: normal; font-weight: normal; line-height: normal;"> He searches who is the variable 2.<span style="font-family: 'Times New Roman'; font-size-adjust: none; font-size: 7pt; font-stretch: normal; font-style: normal; font-variant: normal; font-weight: normal; line-height: normal;"> He founds the inverse of 2l, and he added the inverse number on both sides of equality because 2l+(-2l)=0. 3.<span style="font-family: 'Times New Roman'; font-size-adjust: none; font-size: 7pt; font-stretch: normal; font-style: normal; font-variant: normal; font-weight: normal; line-height: normal;"> He founds the reciprocal of 2, and he multiplies this reciprocal on both sides of equality because 2 multiplied by (1/2) is equal one. 4.<span style="font-family: 'Times New Roman'; font-size-adjust: none; font-size: 7pt; font-stretch: normal; font-style: normal; font-variant: normal; font-weight: normal; line-height: normal;"> Finally the X is equal to P divided by two minus l. <span style="color: fuchsia; font-family: 'Arial','sans-serif'; font-size: 12pt; line-height: 150%;"> b. What kind of equation is this one? <span style="font-family: 'Arial','sans-serif'; font-size: 12pt; line-height: 150%;">This equation is with multiple variables for one of the variables.

<span style="color: fuchsia; font-family: 'Arial','sans-serif'; font-size: 12pt; line-height: 150%;"> 6. a. Mention the steps he takes to solve the 4th problem. <span style="font-family: 'Arial','sans-serif'; font-size: 12pt; line-height: 150%;">1.<span style="font-family: 'Times New Roman'; font-size-adjust: none; font-size: 7pt; font-stretch: normal; font-style: normal; font-variant: normal; font-weight: normal; line-height: normal;"> He searches who is the variable 2.<span style="font-family: 'Times New Roman'; font-size-adjust: none; font-size: 7pt; font-stretch: normal; font-style: normal; font-variant: normal; font-weight: normal; line-height: normal;"> He founds the reciprocal of (1/d), and he multiplies this reciprocal on both sides of equality because (1/d) multiplied by d is equal one. 3.<span style="font-family: 'Times New Roman'; font-size-adjust: none; font-size: 7pt; font-stretch: normal; font-style: normal; font-variant: normal; font-weight: normal; line-height: normal;"> He founds the inverse of C, and he added the inverse number on both sides of equality because C+(-C)=0. 4.<span style="font-family: 'Times New Roman'; font-size-adjust: none; font-size: 7pt; font-stretch: normal; font-style: normal; font-variant: normal; font-weight: normal; line-height: normal;"> Finally the X is equal to P divided by two minus l. <span style="color: fuchsia; font-family: 'Arial','sans-serif'; font-size: 12pt; line-height: 150%;"> b. What kind of equation is this one? <span style="color: #000000; font-family: 'Arial','sans-serif'; font-size: 12pt; line-height: 150%;">This equation is with multiple variables for one of the variables with a fraction. <span style="color: fuchsia; font-family: 'Arial','sans-serif'; font-size: 12pt; line-height: 150%;"> c. What’s the difference between problem 3 and problem 4? <span style="color: #000000; font-family: 'Arial','sans-serif'; font-size: 12pt; line-height: 150%;">The differences are that: In the third video the equation is lineal while in the fourth video the equation has a fraction. The third video has tree variables while the fourth video has four variables.

<span style="color: fuchsia; font-family: 'Arial','sans-serif'; font-size: 12pt; line-height: 150%;">7. Did you like the video? <span style="font-family: 'Arial','sans-serif'; font-size: 12pt; line-height: 150%;">Yes, I think that the video is very pleasant and interactive. For my pronunciation of Mr. Mc Call is very good.

<span style="color: fuchsia; font-family: 'Arial','sans-serif'; font-size: 12pt; line-height: 150%;">8. What new things did you learn? <span style="color: #000000; font-family: 'Arial','sans-serif'; font-size: 12pt; line-height: 150%;">As for the form of solving the equations didn't learn anything new, because these equations teach them to us in primary. But, I learned the translation of something words and its pronunciation.