Fractions: Parts of a Whole
Year 3-5 Mathematics Understanding Equal Parts Building Number Sense
What happens when we share?
Think about sharing a chocolate bar with friends How do we make sure everyone gets the same amount? What makes sharing fair?
Fractions Show Parts of a Whole
A fraction tells us about equal parts The whole is divided into the same-sized pieces Each piece is called a unit fraction Examples: 1/2, 1/3, 1/4, 1/5, 1/10
Let's Explore Halves!
Fold a paper plate in half Both parts must be exactly the same size Each part is 1/2 (one half) Two halves make one whole
Unit Fractions We Know
{"left":"1/2 = one half (2 equal parts)\n1/3 = one third (3 equal parts)\n1/4 = one quarter (4 equal parts)","right":"1/5 = one fifth (5 equal parts)\n1/10 = one tenth (10 equal parts)\nThe bottom number shows how many equal parts in the whole"}
Group Challenge: Make Your Own Fraction Models
Work in groups of 2-3 students Use everyday items: counters, string, paper Create models showing different fractions Be ready to explain your model to the class!
Combining Fractions to Make a Whole
When fractions have the same bottom number, we can add them Example: 1/4 + 1/4 + 1/4 + 1/4 = 4/4 = 1 whole The parts must be the same size to combine them This helps us understand what makes a complete whole
Remember This!
Fractions are parts of a whole All parts must be equal in size The bottom number tells us how many equal parts The top number tells us how many parts we have