http://www.timbedley.com A cool little trick that will make your life complete. 20-year veteran elementary school teacher Tim Bedley shows how adding and subtracting positive and negative numbers can be a painless experience.
For more teaching ideas and educational videos please visit http://www.timbedley.com
Duration : 0:9:17
Access full lesson containing this video at: http://www.yourteacher.com/geometry/subtractingintegers.php Students review the addition and subtraction of integers using a number line, where a positive integer represents a move to the right, and a negative integer represents a move to the left. Students learn that minus a negative can be thought of as plus a positive.
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Access full lesson containing this video at: http://www.yourteacher.com/prealgebra/subtractingmixednumbers.php Students learn to subtract mixed numbers by first subtracting the fractions, then subtracting the whole numbers. For example, to subtract 6 1/3 - 4 2/3, first subtract 1/3 � 2/3. However, notice that 1/3 � 2/3 equals a negative fraction. In this situation, the first fraction, 6 1/3, can be rewritten as 5 + 1 1/3, or 5 + 4/3, or 5 4/3. Therefore, the original problem, 6 1/3 - 4 2/3, can be rewritten as 5 4/3 - 4 2/3. Now, subtract the fractions, 4/3 � 2/3, to get 2/3, and subtract the whole numbers, 5 �4, to get 1. So 5 4/3 - 4 2/3 = 1 2/3. Note that some of the problems in this lesson also require the student to find a common denominator for the fractions. For example, 8 5/16 - 1 1/8.
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Converting mixed numbers to improper fractions and improper fractions to mixed numbers
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Access full lesson containing this video at: http://www.yourteacher.com/prealgebra/subtractingwholenumbers.php Students learn to subtract numbers with two or more digits, such as 985 - 47. The first step is to line up the numbers vertically so that the units digits are in the same column. Next, subtract the units digits, the tens digits, and the hundreds digits. When subtracting the units digits, notice that it is not possible to subtract 7 ones from 5 ones, so 1 ten must be borrowed from the tens column, leaving 7 tens and 15 ones. Now, subtracting the units digits, 15 - 7 = 8, subtracting the tens digits, 7 - 4 = 3, and subtracting the hundreds digits, 9 - 0 = 9. So 985 - 47 = 938. Note that the answer to a subtraction problem is called the difference, so the difference of 985 - 47 is 938.
Duration : 0:1:25
from The Musical Math DVD available from www.kidsinglish.com for only US$10: over 2 hours of original Math songs and videos to making learning mathematics fun
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http://RightBrainMath.com Math multiplication table tricks using patterns on Tic-Tac-Toe Squares for the Threes, Sixes, and Nines. MisterNumbers math tricks will rock you as you learn multiplication for the 3 6 and 9 times tables in this video and the Sevens, Fours, and even the whole times table on other videos. This is fun for homeschool math or in a classroom. Teachers and parents will find this lesson for math times tables fun for students and for the Teacher. See other Mister-Numbers videos to see right brain ways to learn the multiplication times tables using overviews, math patterns, and visual puzzles. http://RightBrainMath.com
http://RightBrainMath.com Math times table created from fun patterns as a way to learn multiplication tables for Threes, Sixes, and Nines. This video also teaches place value. This video has the student create worksheets where they can learn the times tables. This is useful for teaching math in a classroom, at home, as part of homeschool or as fun homework. Right Brain Math can teach Elementary Students. Curriculum Review magazine calls it a revolutionary approach to introducing math. It is also very effective for remedial math for students who have fallen behind in math. Learning the multiplication tables are crucial for a student taking algebra. The Right Brain approach has helped many kids who have a negative attitude about math or numbers. http://RightBrainMath.com
Right Brain Math is an easy, effective, visual method of teaching multiplication as well as addition, subtraction, or division. It also helps students learn factors.
Because it uses visual and auditory patterns as a teaching strategies, it appeals to many learning styles because it emphasizes patterns and puzzles and overviews.
Kids see the big picture of the multiplication tables first, and then understand how the individual factors relate to each other. http://RightBrainMath.com
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If you can multiply by 1, 2, 3 and 4, you can also do it by 5, 6, 7, 8, 9 and 10 using only your fingers and thumbs.
What people do to avoid math…
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Directions for subtracting mixed numbers with unlike denominators and regrouping.
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Access full lesson containing this video at: http://www.yourteacher.com/prealgebra/dividingdecimals.php Students learn to divide a decimal by a decimal by first multiplying both decimals by the power of 10 that changes the second decimal to a whole number. For example, to divide 0.16 by 0.8, first multiply both decimals by 10, to get 1.6 8. Next, divide the decimal by the whole number in the same way that one would divide a whole number by a whole number (using long division). However, at the end of the problem, the decimal point is brought straight up from the decimal that is inside the division symbol to the answer that is written on top of the division symbol.
Duration : 0:1:42