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Title
Lesson Objective
This task is for students to solve addition and subtraction of time intervals problems.
Background Information for Teacher
Words in bold are said aloud by the teacher.
Student Prior Knowledge
Students should have prior knowledge of time intervals of 5 minutes and quarter past and til.
Materials:
Number line
Judy Clock
Paper and pencil
Math Journals
Step-by-Step Guided Lesson
Step 1: Start Video
(Tips: Interact with the video by pausing, to ask questions or discuss information viewed with student.)
Step 2: Teach Lesson
After watching the video- You just received a postcard from a relative or friend. They are coming to visit! You must determine
which method of travel will take the least amount of time.
An airplane leaves her hometown at 2:45 p.m. and arrives in your town at 4:45 p.m.
By train, they can leave at 3:20 p.m. and arrive at 7:50 p.m.
By car it takes the same amount of time as by plane and train combined.
How long does the car take to get to her house?
Ask if there are any questions. Let the student know they can use whatever tools they need to accomplish the task.
Questions you can ask the student:
Is there another way to do that?
How do you know?
What have you discovered?
Where can you find that answer?
What other choices do you have?
What do you find difficult or challenging?
Describe.... Explain.... Tell.... LIst......
Can you draw a picture? or a number line?
Select models for the student to share from simple - concrete to the more abstract. Make connections to what the student should
know.
Ask the student, Is there a way to represent the time problem using an equation or expression? Allow the student time to
respond.
Then have the student complete the interactive online workbook below.
Step 3: Complete the worksheet attached below.
Workbook for extra practice and review. (Self-grading interactive online workbook)
Step 4: Review. Start the next lesson with the game or activity attached below for review so the student can demonstrate
understanding of this lesson before moving forward.
Making a Paper Plate Clock (offline) activity