Unit 9, Lesson 2
Sums and Differences of Fractions
Grade 4
Preparation
Lesson Narrative
In this lesson, students apply what they know about equivalence and addition and subtraction of fractions to solve problems. Throughout the lesson, students have opportunities to reason quantitatively and abstractly as they connect their representations, including equations, to the situations (MP2) and compare their reasoning with others' (MP3).
The work of this lesson helps prepare students for adding and subtracting with unlike denominators in grade 5. If students need additional support with the concepts in this lesson, refer back to Unit 3, Section B in the curriculum materials.
- Action and Expression
- MLR8
- Explain (orally and in writing) strategies for solving problems involving addition and subtraction of fractions and mixed numbers with like denominators.
- Let’s practice solving problems involving fractions.
Required Preparation
None
Suggested Centers
NoneTeacher Reflection Questions
What strategies were students using to solve problems? What evidence did students show that they were reasoning about equivalence as they solved the problems?