(U3) Lesson 1 - Pool Party

Last updated over 2 years ago
11 questions
Today's Learning Goal:
  • Interpret a story context to create the graph of a function without being given information about scale or shape.
  • Introduce features of functions in the context of graphing a common situation. Features include: Maximum/minimum Domain Range x-intercept, y-intercept Intervals of increase and decrease Continuous, discrete, discontinuous Rate of change
Reminders:
Continuous functions can have any value within a specific interval and values are connected. (measureable)
Domain of a function: The numbers that can be used as possible inputs
Today's Materials:
  1. Laptop
  2. Pencil
  3. Binder
Please complete the Jump Start (activator). This is independent it should be silent.
Required
0

Which one doesn't belong and why?

Launch, Explore, Discuss w/ guided notes

Mr. Taylor has a small pool full of water that needs to be emptied, cleaned, then refilled for his son's pool party. He uses a hose to drain and fill the pool with water. It is important to note that the hose drains and fills at the same rate.
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The following infomation describes the situation in order:
  1. The pool starts with 12 gallons of water. (12 gallons is the maximum the pool holds)
  2. Then, drained the pool with the hose at a rate of 3 gallons per minute for 2 minutes.
  3. Then, stopped draining the pool to drink some lemonade for 3 minutes. (Removed the hose while drinking)
  4. Next, started draining the pool again until it was empty.
  5. Once empty, He cleaned the inside of the pool for 4 minutes.
  6. NIce and clean, starts to fill the pool for 3 minutes at the same rate it was drained. (3 gallons per minute)
  7. Stopped filling the pool to use the bathroom for 1 minute.
  8. Finally, finished filling until the maximum amount of water was in the pool.

On the Guided Note sheet, (10 Minutes)
Sketch a possible graph showing the gallons of water in the pool over time, in minutes. Only on the graph that says "My Attempt". Use a ruler for straight lines!

Be sure to include all of the activities Mr. Taylor did to prepare the pool for the party. Remember that only one activity happened at a time. Think carefully about how each section of your graph will look, labeling where each activity occurs.

Answer the following questions based on the solution graph.
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How long did it take to drain, clean, and refill the pool?

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What is happening in the situation when there is a decreasing line on your graph?

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What is happening in the situation when there is a increasing line on your graph?

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What intervals of time represents that the water was decreasing?
(Select all that apply)

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What intervals of time represents that the water was increasing?
(Select all that apply)

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What intervals of time represents that the water was remaining constant (no change in gallons)?
(Select all that apply)

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What does the y-intercept represent in the situation?

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0

Does the pool situation graph represent a function? Why or why not?

Required
4

Independently

Create and write a 3 part short story that includes, in any order,
  • one interval of increase,
  • one interval of decrease,
  • and horizontal constant interval.
Sketch it on the graph. Label the maximum, minimum, increase, decrease, and y intercept.

Unit 2 Task: Boss Decisions