Schottenbauer Publishing

Thursday, July 30, 2015

Graph Lines Up & Down: The Meaning of Change

Line graphs go up and down. What is the meaning of change? Consider the following three graphs, excerpted from Volumes 1 & 2 of The Science of Home Construction from Schottenbauer Publsihing:






Discussion Questions
  1. What does the horizontal straight line represent?
  2. Why does the force line go down, and not up?
  3. What does the gradual, curved slope represent?
  4. What does the vertical straight line represent?
  5. What is the maximum force leading to breakage?
  6. Over what time is the force applied?







Discussion Questions
  1. What does the horizontal straight line represent?
  2. Why do the power and current increase?
  3. What does the first bump represent?
  4. What do the final 2 bumps represent?
  5. Does it take more or less power to remove the screw? Why?
  6. Why is the power to remove the screw not negative?
  7. What is the maximum real power? 
  8. What is the maximum apparent power? 
  9. What is the maximum current?





Discussion Questions
  1. What physical action is required to make this particular graph? 
  2. What do the three lines represent? 
  3. Why does the angle increase during each rotation event? 
  4. Why does the velocity go down and up during each rotation event? 
  5. Why does the acceleration go down, up, and then down during each rotation event?
  6. How many times is the screwdriver turned?
  7. How many angles is the screwdriver turned each time? Make a list containing the value for each event.
  8. What is the average angle turned by the screwdriver?
  9. What is the total angle turned by the screwdriver?
  10. Over what period of time is the screwdriver turned during each rotation event? Make a list containing the value for each event.
  11. What is the average length of time for a turn of the screwdriver?
  12. What are the minimum and maximum angular velocity values?
  13. What are the minimum and maximum angular acceleration values?

Over 8,000 graphs from Schottenbauer Publishing provide real-life topics for student learning, including sports, transportation, construction, environment, music, entertainment/toys, and general physics. 


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