Unit 1, Lesson 14
Use Diagrams to Compare
Grade 2
Preparation
Lesson Narrative
In this lesson, students use their understanding of bar graphs to make sense of a new representation, the tape diagram. The tape diagram is a representation that can be used by students to represent story problems. Students will use tape diagrams in grade 2 and throughout elementary, middle, and high school.
- Action and Expression
- MLR2
- Comprehend (in written and spoken language) the term “diagram” refers to a drawing or picture that represents quantities.
- Interpret (orally) a tape diagram that represents a comparison.
- Let’s use bar graphs and diagrams to solve Compare problems.
Required Materials
Activity 1
Required Preparation
None
Teacher Reflection Questions
The relationship between addition and subtraction is important as students develop fluency within 20 in grade 2. How did you use the tape diagram to help students build this understanding?