Fraction Fundamentals for Grade 3

Understanding Parts of a Whole 45-minute lesson Grade 3 Mathematics

Lesson Overview

Duration: 45 minutes Grade 3 Mathematics Unit: Exploring Equivalent Fractions Lesson 1 of 15 Focus: Introduction to Fractions

Common Core Standards

CCSS.Math.Content.3.NF.A.1: Understand fractions as parts of a whole CCSS.Math.Content.3.NF.A.2: Represent fractions on a number line Building foundation for equivalent fractions Preparing for advanced fraction concepts

Learning Objectives

Define fractions and identify numerator and denominator Cut wholes into equal parts and name fractions Model fractions using visual aids Represent simple fractions on a number line

Engage: The Chocolate Bar Challenge

Imagine you have a chocolate bar How would you share it equally with 3 friends? Think about dividing into parts What does 'equal' mean?

What is a Fraction?

A fraction is a way to name parts of a whole It shows how many equal pieces we have Every fraction has two important parts Fractions help us describe partial amounts

Parts of a Fraction

{"left":"Numerator: The number on top\nShows how many parts we have","right":"Denominator: The number on bottom\nShows how many equal parts in the whole"}

Hands-On Activity: Fraction Circles

Work in groups of 3-4 students Use fraction circles and bars Show me one half! Find three-fourths! Identify the fractions you create

Materials We'll Use Today

Fraction circles and bars Pre-cut paper shapes Number line strips Sticky notes for marking Colored pencils and crayons

Fraction Number Line

Quick Check: Think-Pair-Share

Find a partner Explain what the numerator means Explain what the denominator means Share one example with the class

What We Learned Today

Fractions name parts of a whole Numerator = parts we have Denominator = total equal parts Fractions can be shown on number lines Next: We'll explore equivalent fractions!