Math Student Help

Access full lesson containing this video at: http://www.yourteacher.com/algebra1/addingandsubtractingrationalexpressions.php Students learn that when adding rational expressions, the first step is to factor each of the denominators, if possible, then give each term a common denominator by multiplying the numerator and denominator of each term by the appropriate value. Next, add across the numerators and keep the denominators the same. Finally, factor the resulting numerator, if possible, to determine if the rational expression can be reduced.

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Access full lesson containing this video at: http://www.yourteacher.com/prealgebra/leastcommondenominator.php Students learn to add unlike fractions by first finding a common denominator. For example, to add 1/2 + 1/3, first find the common denominator of 2 and 3, or the Least Common Multiple of 2 and 3, which is 6. Then multiply the numerator and denominator of 1/2 by 3, to get the equivalent fraction 3/6, and multiply the numerator and denominator of 1/3 by 2, to get the equivalent fraction 2/6. Next, add the like fractions, 3/6 + 2/6, to get 5/6. So 1/2 + 1/3 = 5/6. Students also learn to subtract unlike fractions by following the same process that is used when adding unlike fractions.

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Here’s a much requested room tour for you all

Check out!
http://www.youtube.com/Dannyar10

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In this video, I’ll show you how to add and subtract fractions with different denominators. This process is very different when the denominators are different, but with practice can be just as easy as when the denominators are the same.

If you are a teacher or student
looking for online resources to help you understand other things you’re having trouble with, go to my website:

http://sites.google.com/site/klinzmannkonnection/

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Click http://www.rajshri.com to watch more of the learn series

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Access full lesson containing this video at: http://www.yourteacher.com/prealgebra/addingdecimals.php Students learn to add decimals by first lining up the decimal points, then adding the numbers by column. For example, to add 14.2 + 2.86, first line up the decimal points, then add the digits in the hundredths column, to get 0 + 6, or 6, then add the digits in the tenths column, to get 2 + 8, or 10, so write a 0 in the tenths column and carry the 1 to the units column, then add the digits in units column, to get 1 + 4 + 2, or 7, then add the digits in the tens column, to get 1. So 14.2 + 2.86 = 17.06.

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This is my puzzle collection as of august fifth 2009

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Here is my addition for pointvanieee and hotpinklove09.

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Organic chemistry: Michael addition (conjugate addition of enolate ions). Robinson annulation (Michael addition followed by aldol condensation).

This is a recording of a tutoring session, posted with the students permission.

These videos are offered on a “pay-what-you-like” basis. You can pay for the use of the videos at my website:
http://www.freelance-teacher.com/videos.htm

For a printable document containing the handout discussed in this video series, go to my website.

For a list of all the available video series, arranged in suggested viewing order, go to my website.

For a playlist containing all the videos in this series, click here:
http://www.youtube.com/watch?v=2umMcgGE5QI&feature=PlayList&p=7FB47F913119BB9D&index=0&playnext=1

(1) Michael addition
(2) Continued
(3) Robinson annulation
(4) Continued
(5) Continued
(6) Continued

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Access full lesson containing this video at: http://www.yourteacher.com/prealgebra/decimalwordproblems.php Students learn to solve word problems that involve adding or subtracting decimals. For example: Margaret is mailing three letters that weigh 3.7 oz., 2.913 oz., and 2.82 oz. What is the combined weight of the letters?

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