Unit 9, Lesson 11
All about Tape Diagrams
Grade 2
Preparation
Lesson Narrative
In previous lessons, students analyzed and solved story problems.
In this lesson, students match story problems with tape diagrams and equations and write stories based on a tape diagram (MP2). The words in each story need to be interpreted carefully in order to decide which equation is the best match. For most problems, there is a choice for students to make because the problems can be represented and solved with either addition or subtraction. Likewise, tape diagrams can often be interpreted in multiple ways, either as showing addition or showing subtraction.
The Lesson Synthesis highlights how a tape diagram can help students make sense of a story problem and decide on a method to solve the problem.
- Action and Expression
- MLR8
- Create (in writing) and solve a story problem that represents the relationships shown in a tape diagram.
- Match (orally) diagrams and equations that represent the same story problem.
- Let’s match diagrams, story problems, and equations.
Required Preparation
- Create a set of cards from the blackline master for each group of 2.
Suggested Centers
NoneTeacher Reflection Questions
Students have used tape diagrams to interpret different situations. How have these diagrams helped your students interpret story problems? How can you leverage the connections students make between story problems, diagrams, and equations when they solve problems in upcoming lessons?