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Identifying and Modeling Fractions. Pamela D. Coleman. What is a fraction?. A fraction represents a part of a whole or part of a set. Example: The pizza slice is one part of the whole pizza. Fractions. There are two numbers in a fraction. 1 2.
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Identifying and Modeling Fractions Pamela D. Coleman
What is a fraction? • A fraction represents a part of a whole or part of a set. • Example: The pizza slice is one part of the whole pizza.
Fractions • There are two numbers in a fraction. 1 2 The top number is called the numerator. The bottom number is called the denominator. TIP: The Denominator is Downstairs
Fractions • The numerator tells how many parts of the whole or set you have. • The denominator tells how many parts the whole or set is divided into. 1 2
Example • The circle is divided into 4 equal parts, or fourths. • Each part is one-fourth of the whole circle - one part out of four parts in all. • Two parts out of four parts would be… Two-fourths or one half 1 4 1 2
Example • Each part is one half of the whole window - one part out of two parts in all. • Two parts out of two parts would be… One whole or 2/2 or 1 • The window is divided into 2 equal parts, or halves. 1/2
Part of a whole Numerator – tells how many parts of the whole you have Fractions Denominator –how many parts the whole is divided into Top number is the numerator Bottom number is the denominator
Practice... • What fraction of the pizza has pepperoni on it? • Hint: How many slices have pepperoni on them? 3 • Hint: How many slices are there in all? 4 • What fraction of the pizza has pepperoni on it? • ¾ (three-fourths) That’s correct! Play Let’s play a game!
More practice… 3/2 2/5 3/5 What fraction of the teddy bears is notbrown?
References http://www.kidsnumbers.com/turkey-terminator-math-game.php
Other helpful math websites… http://www.mathplayground.com/games.html http://www.iknowthat.com/com/L3?Area=L2_Math
Correct! Back 3 5 Three - fifths
Back Oops…let’s try again…