## Saturday, November 19, 2011

### What Common Referents Should Students Understand in Order to See the Relationships between Fractions, Decimals, and Percents?

Since I've been creating all of these fraction, decimal, and percent games recently, I began to think about this question:

What basic fractional measures should all students be able to picture in their minds so that they can compare different fractions, decimals, and percents?

Well, I like to think about a measuring cup set to help me answer that question.
If a student can compare and visualize: 1 whole, 3/4,  2/3, ½, 1/3, and ¼ , then they can use this information to compare other quantities.  For example, if I was trying to make sense out of 5/8, I would think:
4/8 is the same as 1/2
5/8 is a little more than 4/8 or 1/2
So 5/8 is a bit more than 1/2 or 50% or .5
I bet it is about 60% or .6 something (actual = .625 or 62%)
Now... compare 5/8 and .42.  Could you do it?
Deborah
P.S. This is the perfect reason why you should have your children cooking and measuring with you in the kitchen... building number sense!

#### 1 comment :

1. Hi Deborah:

Since today's kiddos don't cook, build or sew (unless there's a video game on those topics that I haven't seen!) their real-life referents are becoming lost. I am astonished every year when they cannot use a ruler! Thanks for making an effort to "carry on." Your District is LUCKY to have you!
And thanks for always having something on your blog that makes me think. I love to visit!

Kim