Curriculum Library

Fractions Big Idea 3: Adding/Subtracting Proper Fractions

Key Concept: Fractions can be combined to make a whole.

Unit Launcher    
View Roberto's Trail Mix: Discussion Guide and KWL Chart

Lesson Sequences

F.3-1-1 Add Unit Fractions  |
View Lesson Opener Talk-About (8-10 min)
View Guided Lesson Learn how to add unit fractions using models, models with numbers and then numbers only. (8-15 min)
View Lesson Closer Explain & Solve (5 min)
F.3-1-2 Estimate Sums of Proper Fractions  |
View Lesson Opener Hands-On (8-10 min)
View Guided Lesson Estimate and place fractions and addition fraction expressions on a number line. (8-15 min)
View Lesson Closer Agree/Disagree (5 min)
F.3-1-3 Add Proper Fractions  |
View Lesson Opener Think-Pair-Share (8-10 min)
View Guided Lesson Learn how to add proper fractions using models, models with numbers and then numbers only. (8-15 min)
View Lesson Closer Agree/Disagree (5 min)
F.3-1-4 Compare Sums of Proper Fractions  |
View Lesson Opener Think-Pair-Share (8-10 min)
View Guided Lesson Use three strategies to compare and order fraction expressions with sums. (8-15 min)
View Lesson Closer Explain & Solve (5 min)
Real World Investigation Part 1    
View Roberto's Trail Mix: Roberto's Data
Key Concept: Since addition and subtraction are inverse operations, fractions can be used to show the difference between two quantities of the whole.

Lesson Sequences

F.3-2-1 Subtract Unit Fractions  |
Lesson Plan
View Lesson Opener Talk-About (8-10 min)
View Guided Lesson Learn how to subtract unit fractions using models, models with numbers and then numbers only. (8-15 min)
View Lesson Closer Explain & Solve (5 min)
F.3-2-2 Estimate Differences of Proper Fractions  |
Lesson Plan
View Lesson Opener Hands-On (8-10 min)
View Guided Lesson Estimate and place fractions and subtraction fraction expressions on a number line. (8-15 min)
View Lesson Closer Explain & Solve (5 min)
F.3-2-3 Subtract Proper Fractions  |
Lesson Plan
View Lesson Opener Think-Pair-Share (8-10 min)
View Guided Lesson Learn how to subtract like proper fractions using models, models with numbers and then numbers only. (8-15 min)
View Lesson Closer Agree/Disagree (5 min)
F.3-2-4 Compare Differences of Proper Fractions  |
Lesson Plan
View Lesson Opener Think-Pair-Share (8-10 min)
View Guided Lesson Use three strategies to compare and order fraction expressions with differences. (8-15 min)
View Lesson Closer Explain & Solve (5 min)
Real World Investigation Part 2    
View Roberto's Trail Mix: Create Some Data
Key Concept: Inverse relationships that occur in whole numbers also occur with fractions.

Lesson Sequences

F.3-3-1 Complete Addition Equations with Unknowns  |
Lesson Plan
View Lesson Opener Talk-About (8-10 min)
View Guided Lesson Learn how to find the value of a missing addend using models and numbers. (8-15 min)
View Lesson Closer Explain & Solve (5 min)
F.3-3-2 Complete Subtraction Equations with Unknowns  |
Lesson Plan
View Lesson Opener Talk-About (8-10 min)
View Guided Lesson Learn how to find the value of a missing minuend or subtrahend using models and numbers. (8-15 min)
View Lesson Closer Agree/Disagree (5 min)
F.3-3-3 Complete Addition/Subtraction with Unknowns  |
Lesson Plan
View Lesson Opener Think-Pair-Share (8-10 min)
View Guided Lesson Use strategies and models and solve for the unknown in an addition or subtraction equation with two like fractions. (8-15 min)
View Lesson Closer Explain & Solve (5 min)
F.3-3-4 Compare Fraction Sums and Differences  |
Lesson Plan
View Lesson Opener Hands-On (8-10 min)
View Guided Lesson Use 3 strategies to compare fractions and fraction expressions with like fractions (8-15 min)
View Lesson Closer Explain & Solve (5 min)
Real World Investigation Part 3    
View Your Trail Mix: Your Data
Key Concept: Addition and subtraction of fractions can be used to solve a variety of problems.

Lesson Sequences

F.3-4-1 Compose/Decompose Numbers with Pattern Blocks  |
Lesson Plan
View Lesson Opener Talk-About (8-10 min)
View Guided Lesson Determine the value of a fractional part of a whole using pattern block models. (8-15 min)
View Lesson Closer Explain & Solve (5 min)
F.3-4-2 Compose/Decompose Numbers with the Unitizing Grid  |
Lesson Plan
View Lesson Opener Hands-On (8-10 min)
View Guided Lesson Create shapes and/or write the fractions represented by the shapes in relation to the whole using the unitizing grid. (8-15 min)
View Lesson Closer Explain & Solve (5 min)
F.3-4-3 Complete Proper Fraction Equations with Unknowns  |
Lesson Plan
View Lesson Opener Think-Pair-Share (8-10 min)
View Guided Lesson Find the value of a missing minuend or subtrahend using models and numbers. Use strategies and models and solve for the unknown in an addition or subtraction equation with two like fractions. (8-15 min)
View Lesson Closer Explain & Solve (5 min)