Compare Reptile Lengths in Story Problems (IM Grade 2, Unit 3, Lesson 6)
Task
Lesson Goals Create and solve Compare, Larger Unknown and Compare, Smaller Unknown story problems about length. Lesson Narrative The purpose of this activity is for students to make sense of and solve Compare story problems involving length. Students use measurements provided for reptiles and create their own Compare problems to solve with a partner. Students must solve a Compare, Difference Unknown problem when creating their mystery problem. When they solve their partner's mystery problem, they must solve a Compare, Bigger Unknown or Compare, Smaller Unknown problem. Encourage students to use diagrams or other drawings to show how they know which reptiles their partner picked. Some students may choose to use equations to represent the lengths. How Tuva Enhances This Lesson With Tuva’s tools, all reptiles and their bar lengths are ready for teachers to use. When synthesizing the lesson, if students want to share their work, Tuva allows teachers to isolate both bars, making it easier for students to explain their thinking. Bars are color-coded by reptiles, helping students see the difference between the two amounts more clearly. This lesson includes content and learning goals from the first activity, providing additional practice. Additionally, IM notes that students with disabilities may benefit from alternatives to writing on paper.
Lesson 6; Compare Reptile Lengths in Story Problems Lin and Jada are comparing the lengths of several lizards. The lengths are shown in the image on the left. In this lesson, we will use diagrams to compare their lengths.
Topics and standards: Illustrative Math & Tuva, Grade 2