Day 5 of Fractions....and the students are hanging in there! We only have one basic function left to discuss about fractions...Subtraction! Subtracting fractions is as simple as eating a pizza! If you have three-fourths of a pizza left, and you then eat one-fourth of that three-fourths, three-fourths minus one-fourth is two-fourths...which is true, but we must REDUCE! The answer would be one-half.
Subtracting fractions can be easy; however, what happens when the denominators are not the same?! Luckily, we talked about this idea today, and found out...it is exactly like adding fractions, in that we must find a common denominator by finding the LEAST COMMON MULTIPLE! We must change one or both fractions (top and bottom) in order to have common denominators and then we just Subtract the second one from the first and leave the denominators alone. The least common denominator will be the denominator at the end unless we must reduce!
It has been an exciting week in the world of Mr. Joines as we worked through everyone's favorite concept...FRACTIONS! Next week we will begin looking at Metric conversions, but for now...this blog made me hungry, it must be pizza time! Here's a 20-second video of my likely situation in a few minutes!
http://www.youtube.com/watch?v=Csktxx1OrBU&feature=player_embedded
Mr. Math Man,
ReplyDeleteI thoroughly enjoyed your blog! It has great information, awesome pictures, and makes me want to do math. Everything was great except for the picture of Kevin Garnett's jersey. You get an "A" in MY book!
Professor Holden