3 rd grade fractions! rachel volpe february 12, 2012 february 12, 2012 11:00pm rachel volpe. math 1
TRANSCRIPT
WHAT ARE FRACTIONS?
A fraction is part or portion of a whole.
February 12, 2012 11:00pm Rachel Volpe. Math 2
WHAT ARE FRACTIONS
• There are 30 runts
• One 3rd of the runts are pink
• One 6th (1/6) of the runts are yellow
February 12, 2012 11:00pm Rachel Volpe. Math 3
HOW TO WRITE FRACTIONS
WHAT WE SEE WHAT IS MEANS
•The 1 is the numerator
• the number above the fraction bar
•The 2 is the denominator
• The number below the fraction bar
February 12, 2012 11:00pm Rachel Volpe. Math 4
COMMON FRACTIONS• There are many fractions
• Here are some common ones• One half (1/2)
• One third (1/3)
• One fourth (1/4)
• One Eighth (1/8)
February 12, 2012 11:00pm Rachel Volpe. Math 5
FRACTIONS CAN BE FOUND IN EVERYDAY LIFE
FRACTION
1. One half (1/2) of a rectangle
2. A third ( 1/3) of a circle
EXAMPLE
1. A candy bar cut in half (1/2)
2. A third of a cake
February 12, 2012 11:00pm Rachel Volpe. Math 6
FRACTIONS CAN BE FOUND IN EVERYDAY LIFE
FRACTION
1. One 4th (1/4) of a square
2. One 8th (1/8) of a circle
EXAMPLE
1. A brownie cut into 4 pieces
2. A pizza cut into 8 pieces
February 12, 2012 11:00pm Rachel Volpe. Math 7
• There are 24 M&Ms
• Half of the M&Ms is 12 M&Ms
REAL LIFE FRACTIONS
February 12, 2012 11:00pm Rachel Volpe. Math 8
REAL LIFE FRACTIONS• There are 8
sour patch kids
• One fourth (1/4) are green
February 12, 2012 11:00pm Rachel Volpe. Math 9
WHAT HAVE YOU LEARNED?1. How many of
the M&Ms are red?
2. How many of the M&Ms are yellow?
3. How many of the M&Ms are green?
February 12, 2012 11:00pm Rachel Volpe. Math 11
ANSWERS1. 1/4 of the
M&Ms are red
2. 1/8 of the M&Ms are yellow
3. 1/12 of the M&Ms are green
February 12, 2012 11:00pm Rachel Volpe. Math 12
ACTIVITIES• Cookie activity
• http://www.teacherlink.org/content/math/interactive/flash/kidsandcookies/kidcookie.php
• Mystery Picture
• http://www.dositey.com/2008/math/mistery2.html• Melvin Makes a Match
• http://pbskids.org/cyberchase/math-games/melvins-make-match/
February 12, 2012 11:00pm Rachel Volpe. Math 13
REFERENCES
February 12, 2012 11:00pm Rachel Volpe. Math 14
Brownies. Retrieved from http://mostlyaboutchocolate.com/blue-basil-holiday-brownies-
selection/
Cake. Retrieved from http://www.dummies.com/how-to/content/how-to-recognize-types-of-
fractions.html
Candy Bar. Retrieved from http://www.slashfood.com/tag/snickers/
Cookie activity. Retrieved from
http://www.teacherlink.org/content/math/interactive/flash/kidsandcookies/kidcookie.php
Fractions. Retrieved fromhttp://illingsworth4.pbworks.com/w/page/10945612/Fractions
M&Ms. Retrieved from http://en.wikipedia.org/wiki/File:M%26M's_Plain.jpg
Melvin Makes a Match. Retrieved from http://pbskids.org/cyberchase/math-games/melvins-
make-match/
Mystery Picture. Retrieved from http://www.dositey.com/2008/math/mistery2.html
Pizza. Retrieved from http://www.zazzle.com/pizza_pie_photosculpture-153869878758637406
Runts. Retrieved from http://www.amazon.com/Assorted-Flavored-Fruit-Runts-
1Lb/dp/B000JZE9K8
Simple Fractions Puzzle Set. Retrieved from http://blogs.bgsu.edu/crcnews/2008/12/02/simple-
fractions-puzzle-set/
Sour Patch Kids. Retrieved from http://sweets.seriouseats.com/2011/10/candy-a-day-sour-patch-
kids.html