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VARIABLES Investigatio n 1

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Page 1: Investigation 1. Why is it important to control which variables stay the same and which change? How does a changing variable affect the outcome of

VARIABLESInvestigation

1

Page 2: Investigation 1. Why is it important to control which variables stay the same and which change? How does a changing variable affect the outcome of

Lesson Essential Questions

Why is it important to control which variables stay the same and which change?

How does a changing variable affect the outcome of the number of swings?

•WD

Page 3: Investigation 1. Why is it important to control which variables stay the same and which change? How does a changing variable affect the outcome of

VariablesJournal Entry: Where

have you seen a swinger or pendulum action?

•WD

Page 4: Investigation 1. Why is it important to control which variables stay the same and which change? How does a changing variable affect the outcome of

VocabularyVariable: anything that you can change in an experiment that might affect the outcome.

•WD

Page 5: Investigation 1. Why is it important to control which variables stay the same and which change? How does a changing variable affect the outcome of

WD VocabularyPendulum: a mass hanging from a fixed point that is free to swing back and forth.

Page 6: Investigation 1. Why is it important to control which variables stay the same and which change? How does a changing variable affect the outcome of

VocabularyData Table: Used to organize information gathered in an experiment.

•WD

Page 7: Investigation 1. Why is it important to control which variables stay the same and which change? How does a changing variable affect the outcome of

VocabularyAverage: Add numbers

together, then divide the numbers by how many there are.

Example: 2, 3, 42+3+4=9 9/3=33 is the average

Page 8: Investigation 1. Why is it important to control which variables stay the same and which change? How does a changing variable affect the outcome of

Examples Grandfather clocks Swings Wrecking ball metronome

Page 9: Investigation 1. Why is it important to control which variables stay the same and which change? How does a changing variable affect the outcome of
Page 10: Investigation 1. Why is it important to control which variables stay the same and which change? How does a changing variable affect the outcome of
Page 11: Investigation 1. Why is it important to control which variables stay the same and which change? How does a changing variable affect the outcome of
Page 12: Investigation 1. Why is it important to control which variables stay the same and which change? How does a changing variable affect the outcome of
Page 13: Investigation 1. Why is it important to control which variables stay the same and which change? How does a changing variable affect the outcome of

Other pendulums

Page 14: Investigation 1. Why is it important to control which variables stay the same and which change? How does a changing variable affect the outcome of

Procedures 1. Measure Swinger to be sure it is the

right length (38 cm). 2. Set up data table 3. Pull swinger back so that it is inline

with the table.

Page 15: Investigation 1. Why is it important to control which variables stay the same and which change? How does a changing variable affect the outcome of

38 cm

Trial 1Trial 2Trial 3

Page 16: Investigation 1. Why is it important to control which variables stay the same and which change? How does a changing variable affect the outcome of

What do you think???

What was your groups average # of swings???

Why do you think the number of swings were so similar for each group? List ideas in your journal.

Page 17: Investigation 1. Why is it important to control which variables stay the same and which change? How does a changing variable affect the outcome of

standard pendulum 0ne penny, 38 cm long, even with desk

Page 18: Investigation 1. Why is it important to control which variables stay the same and which change? How does a changing variable affect the outcome of

Vocabulary

Hypothesis: An educated guessMass: How much of something there isControl: are like constants in that they

stay the same through out an experiment

Experiment: an investigation designed to find out how variables affect outcomes.

Controlled Experiment: An experiment in which one variable is changed and the outcome is compared to a standard.

Page 19: Investigation 1. Why is it important to control which variables stay the same and which change? How does a changing variable affect the outcome of

Let’s Test it Out (Take 1)!

Each group gets a different bob (weight) a. Repeat first experiment.

b. Record your data and what conclusion you made based on experiment in your notebook.

Pennies and swing change, was there?

Page 20: Investigation 1. Why is it important to control which variables stay the same and which change? How does a changing variable affect the outcome of

Let’s Test it Out (Take 2)!

1. Each group starts at a different height. a. Repeat first experiment. b. Record in your notebook your data,

and what conclusion you made based on experiment.

Page 21: Investigation 1. Why is it important to control which variables stay the same and which change? How does a changing variable affect the outcome of

Guess What!!!

Mass and release positions do not affect the number of swings of a pendulum.

Length of the pendulum does affect the number of cycles/swings.

Page 22: Investigation 1. Why is it important to control which variables stay the same and which change? How does a changing variable affect the outcome of

Let’s Test it Out (Take 3)!

1. Each group gets a different length of string. a. Repeat first experiment.

b. Record in your notebook your data, and what conclusion you made based on experiment.

Your chart is going to look different this time!!!

Here it is!

Page 23: Investigation 1. Why is it important to control which variables stay the same and which change? How does a changing variable affect the outcome of

Conclusion (SAY WHAT???!!!)

The longer the pendulum, the slower and less swings

The shorter the pendulum the faster and more swings.

Page 24: Investigation 1. Why is it important to control which variables stay the same and which change? How does a changing variable affect the outcome of

More Vocabulary

Graph: can be used to display results. It can be used to find patterns, predict, and locate experimental errors.

Page 25: Investigation 1. Why is it important to control which variables stay the same and which change? How does a changing variable affect the outcome of

Very Important!

Title

Axis

Interval

Label

Spacing

Page 26: Investigation 1. Why is it important to control which variables stay the same and which change? How does a changing variable affect the outcome of

Graph Time!!!

Page 27: Investigation 1. Why is it important to control which variables stay the same and which change? How does a changing variable affect the outcome of

Go back and ANSWER YOUR ESSENTIAL QUESTIONS!!!!

Why is it important to control which variables stay the same and which change?

How does a changing variable affect the outcome of the number of swings?


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