How will you explain to your students that when you add or subtract fractions you must have a common denominator but you do not need one with multiplication or division????
This is not easy to explain but let me start by explaining what a common denominator is. The denominator is the bottom number and common means that both are the same number. In addition and subtraction they need to be the same so that when you do the math the number you time it by can go into both common denominator an even time. When it comes to multiplication or division it does not matter because you are flipping the number and doing the oppose. If you are doing division you actually work the problem doing multiplication is order to get the correct answer. This is hard to explain so I hope I did ok.....................
Sunday, April 3, 2011
Tuesday, March 22, 2011
What I have learn to enrich my understanding on fractions
Fractions is something that is hard for me to understand. Fractions can be confusing at times because it is so much that goes along with fraction, if it was just adding and subtracting I would be ok. In class we created this fraction bars. The fraction bars helped enriched my understanding because I have a better visual outlook on fractions. When you have the fraction bars you can divide and use only the one you need and you can see like smaller pieces that would equal a whole.
Subscribe to:
Posts (Atom)