1. Review of Previous Lesson
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Review of Previous Lesson
State as many Vocabulary words and Learning Objectives that you remember from the last lesson as you can.
Remember to grade yourself from

2. Distance and Displacement
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Distance and Displacement

3. Vocabulary Content: Start End distance displacement scalar vector
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Vocabulary
Content:
Start
End
distance
displacement
scalar
vector

4. Vocabulary Language: Start End explain verbally writing
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Vocabulary
Language:
Start
End
explain
verbally
writing

5. Learning Objectives Content: Start End
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Learning Objectives
Content:
Start
End
Explain the difference between distance and displacement.
Explain the difference between scalars and vectors.

6. Learning Objectives Language: Start End
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Learning Objectives
Language:
Start
End
Verbally and in writing explain.

7. Distance and Displacement
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Distance and Displacement
How far is it from this to that or between this and that?
How far from the front of the classroom to the back?
How far from here to Hong Kong?
Walk around the classroom for 10 seconds.
How far have you gone?
Sit back down where you were.
How far have you gone now?

8. How far have you gone? There are two ways to answer this question.
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How far have you gone?
There are two ways to answer this question.
The sum of the smaller motions that you made.
How far is the end point of your walk from your starting point.
So which answer is correct?
Both!
The question is ambiguous and depends on whether the questioner meant to ask for the distance or displacement.

9. Distance and Displacement
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Distance and Displacement

10. Quick Lab “Comparing Distance and Displacement.”
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Quick Lab “Comparing Distance and Displacement.”
Materials
Graph paper, metric ruler

11. Quick Lab “Comparing Distance and Displacement.”
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Quick Lab “Comparing Distance and Displacement.”
End
Procedure
Draw a dot at the intersection of two lines near the bottom left corner.
Label the dot “Start”.
Draw a dot at the intersection of two lines near the top right corner.
Label the dot “End”.
Start

12. Quick Lab “Comparing Distance and Displacement.”
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Quick Lab “Comparing Distance and Displacement.”
End
Procedure
Draw a path from the Start dot to the End dot. Choose any path that stays on the grid lines.
Use a ruler to determine the distance of your path.
Use a ruler to determine the displacement from Start to End.
Start

13. Quick Lab “Comparing Distance and Displacement.”
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Quick Lab “Comparing Distance and Displacement.”
Which is shorter, the distance or the displacement?
How could you have made the distance shorter?
If you keep the Start and End points the same, is it possible to make the displacement shorter? Explain your answer.

14. Quick Lab “Comparing Distance and Displacement.”
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Quick Lab “Comparing Distance and Displacement.”
Which is shorter, the distance or the displacement?
Displacement is always shorter than or equal to the distance because it is a straight line between two points, not always the actual path of motion.
How could you have made the distance shorter?
The distance would be shorter if the path were more direct. The shortest path would be a diagonal line connecting Start and End, and it would be the same length as the displacement.
If you keep the Start and End points the same, is it possible to make the displacement shorter? Explain your answer.
No, the displacement could not be shorter because it will always be the straight-line distance between the Start and End points.

15. Difference Between Vectors and Scalars
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Difference Between Vectors and Scalars
Scalar:
A physical quantity having a magnitude but no direction.
Vector
A physical quantity having both, a magnitude and a direction.
Is distance a scalar or a vector?
Scalar
Is displacement a scalar or a vector?

16. Distance and Displacement
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Distance and Displacement
Turn to a colleague and explain the terms above.

17. Distance and Displacement
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Distance and Displacement
Distance is a scalar measure of the interval between two locations measured along the actual path connecting them.
Displacement is a vector measure of the interval between two locations measured along the shortest path connecting them.

18. Definition in your own words. Use it meaningfully in a sentence.
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Plenary
Choose one of your lowest graded words from the vocabulary of this lesson and create a vocabulary word map.
Definition in your own words.
Synonyms
Use it meaningfully in a sentence.
Draw a picture of it.
Vocabulary Word

19. 12/27/201812/27/2018
Grade yourself.
Grade yourself on the vocabulary and learning objectives of the lesson.