Asked by Laruen

How do you set up a controlled experiment ?
What's the purpose of a control group?
How many variables should a controlled experiment have?
What are the difference between observation and inferences?

I REALLY NEED HELP!!!!
PLEASE HELP ME !!!!
Answered by Ms. Sue
Check your book. Then post what you think are answers.

We'll be glad to check your answers.
Answered by Laruen
Here is my answer for the first one

I set up a controlled experiment by getting all matirals that I need for my experiment and then using the scientific method to do my experiment.

Im working on the others
Answered by Ms. Sue
You described an experiment. What makes this experiment a "controlled experiment?"

http://www.biology-online.org/dictionary/Controlled_experiment
Answered by Laruen
I got it covered already ;)

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