Toggle navigation
Toggle navigation
Home
DCUM Forums
Nanny Forums
Events
About DCUM
Advertising
Search
Recent Topics
Hottest Topics
FAQs and Guidelines
Privacy Policy
Your current identity is: Anonymous
Login
Preview
Subject:
Forum Index
»
Fairfax County Public Schools (FCPS)
Reply to "Teachers - How to help my 3rd/4th graders write and understand this math equation?"
Subject:
Emoticons
More smilies
Text Color:
Default
Dark Red
Red
Orange
Brown
Yellow
Green
Olive
Cyan
Blue
Dark Blue
Violet
White
Black
Font:
Very Small
Small
Normal
Big
Giant
Close Marks
[quote=Anonymous]1. What do we know? Pepperoni + Cheese = 15 slices and The number of Pepperoni slices = A certain number of Cheese slices + 7 more slices of Cheese So there are more pepperoni slices than cheese slices. Visualize more pepperoni slices than cheese slices. 2. Now: Instead of using "P" we will now start using (C + 7), (which is another way of saying P). This way we can start using one letter, which is C. So: (C + 7) + C = 15 slices 3. Hmmm,, we know that the 2 C's are the same number. So, lets start plugging some numbers in to what C could be. Will (3 + 7) + 3 = 15 slices? No, it will only equal 13 slices. Will (4 + 7) + 4 = 15 slices? Yes, it does. So, P = 11 and C = 4 = 15 slices altogether Admittedly, there is guess work, but I think that might be okay for 3/4 graders who are learning the concept. [/quote]
Options
Disable HTML in this message
Disable BB Code in this message
Disable smilies in this message
Review message
Search
Recent Topics
Hottest Topics
