Does it work?By: Caitlynn McKinney02/28/10

Science Standard 6 – Common Themes

•Indicator 3.6.2 - Investigate how and describe that something may not work if some of its parts are missing.

•Taken from http://dc.doe.in.gov/standards/academicstandards/standardsearch.aspx

Definitions

•Investigate - to examine, study, or inquire into

•Describe - to tell or depict in written or spoken words

•Taken from: www.dictionary.com

Background Information

•How a system is able to function is dependent on the amount and type of parts and how they are assembled.

•A system is actually an interaction of parts.•Parts come together to make a whole that

has properties that the parts do not. •A system that loses a part of itself is not

the same system.

• Taken from: http://www.sciencenetlinks.com/lessons.php?BenchmarkID=11&DocID=1

Let’s Think!

•There are many systems that will not work if a part of it is missing. Can you think of some systems and their parts?

Systems Parts

Would it look different?

•Pick two systems from the previous activity. Draw a picture of the two systems with a part missing.

System #1

System #2

Would it look different?•Does system #1 look different with a part

missing? Explain: ___________________________________________________________________________________________________

•Does system #2 look different with a part missing? Explain: ___________________________________________________________________________________________________

Would it work?•Would system #1 still work with a part

missing? Explain: ___________________________________________________________________________________________________

•Would system #2 still work with a part missing? Explain: ___________________________________________________________________________________________________

The Flashlight

•In a box you will find a flashlight.•Take the flashlight out of the box. Turn

the lights off and turn the flashlight on. •Explain what happened:

_____________________________________________________________________________________________________________________________________________________________________

The Flashlight• Unscrew the top of the flashlight. • Take the two batteries out.• Screw the top of the flashlight back on.• Turn the lights off• Turn the flashlight on.

• Explain what happened?_______________________________________________________________________________________________________________________________________________

• Why do you think this happened? ______________________________________________________________________________________________________________________________

The Camera

•In a box you will find a camera.•Take the camera out of the box.•Turn the camera on and take a picture.•Click the review button.•What do you see?

____________________________________________________________________________________________________________________________________

The Camera

•Open the bottom of the camera.•Take out the rechargeable battery.•Turn the camera on and take a picture.•Click the review button.•What do you see? Explain why.

____________________________________________________________________________________________________________________________________

The Newspaper•In a box you will find a newspaper.•Take the newspaper out of the box.•Flip through the newspaper.•Choose an article to read.•After reading, briefly explain what it was

about. _____________________________________________________________________________________________________________________________________________________________________

The Newspaper• Take a page out of the newspaper.• Flip through the newspaper.• Find an article that interests you.• Read the article.• Briefly explain what the article was about.

______________________________________________________________________________________________________

• Why was it more difficult to understand the article? ____________________________________________________________________________________________________________________________________________________________

Assessment• If a system is missing a part it

A.) May not workB.) Will always workC.) Will always look the sameD.) Changes colors

• What happened when the camera was missing a battery?A.) It allowed you to take a picture and review it.B.) It allowed you to take a picture, but you couldn’t review it.C.) It wouldn’t allow you to take a picture or review it.D.) It was too hot to pick up.

Resources

•http://www.sciencenetlinks.com/lessons.php?BenchmarkID=11&DocID=1

•http://dc.doe.in.gov/standards/academicstandards/standardsearch.aspx

•www.dictionary.com