Get your students thinking about how the number line and the word problem are related! Use this lesson alongside *Get There On Time: Elapsed Time Word Problems* or on its own.
Students will be able to subtract time from a given endpoint.
Language
Students will be able to create an elapsed time subtraction word problem to match a number line using sentence starters and key vocabulary.
Introduction
(2 minutes)
Facilitate a Think-Pair-Share by asking students to think about different strategies they use for subtraction. Have them turn and talk to a partner and then share out as a class. Elicit answers that include: draw a picture, count backwards, number lines, count forwards, friends of 10 trick, fact families.
Tell the class that they will be focusing on a specific strategy for subtraction today as they work with time.