SCIENTIFIC METHOD                     

what is the scientific method?

The scientific method is a way for scientists to study and learn things. It doesn't matter what the scientist is trying to learn, using the scientific method can help them come up with an answer. 

SCIENTIC METHOD STEPS:

1. make an observation

2. ask a question

3.form a hypothesis

4.make a prediction

5. Do a test or experimentation

6.Analyze data

7.Draw Conclusions

HISTORY OF THE SCIENTIFIC METHOD

The scientific method wasn't invented by one person, but was developed by different scientists and philosophers over the years. For something that sounds so simple and basic, there are still long scientific papers written about the method and scientists who disagree on exactly the best way to implement it.

 Francis Bacon, Rene Descartes, and Isaac Newton all helped contribute to the development of the scientific method as a good way to learn about nature and science. They wrote papers and discussed how using experiments and changing variables can help to determine if a guess (or hypothesis) is correct. 

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 SCIENTIFIC METHOD SONG

The steps of a scientific method 

test your knowledge

http://studyjams.scholastic.com/studyjams/jams/science/scientific-inquiry/scientific-methods.htm

HOMEWORK

APPLE OXIDATON EXPERIMENT

MATERIALS NEEDED FOR AN APPLE OXIDATION EXPERIMENT: 

• Small containers
• 2 apples
• 1 Lemon  (squash the lemon) 
• Water
• milk 
• Soda ( coke) 

Experiment: 

1. Take a  lemon and squeeze it into a cup
2. Cut 1 apple in 1/4   (equally divided)
3. take 4 cups and add in each cup  : for  1 cup 100 mls of lemon, for  another cup 100 mls of water, for another cup 100 mls of  milk and for  the last cup 100 mls of coke. 
4. Leave it like that for  8 hours . 
5. Check the state of your apple after 1, 2 and 3 hours and talk with your parents about the effects. 

 is it a fair test? 

yes... Remember if you want to do a fair test you only have to change one  variable. 

changed:  lemon, milk, water and  the coke. 

did not change: 

The amount of liquids for each cup

The time exposed

The size of the apple. 

Follow the scientific method: 

1. make an observation:   write or draw a picture of the apple before. 

2. sk a question:    write a question.
 what do we want to know? 

example: How  to reduce oxidation in an apple? 

3. form a hypothesis/ prediction:  I think that with the _____________ the apple will not turn brown. 

4. Do a test or experimentation:  Write the steps you follow.  

5. Analyze data: 

you can record the information using pictures or a table.

example: 

ingredient	Time to become brown	Draw the results
lemon
water
milk
Coke

6. Draw conclusion: 

When the inner part of the apple is exposed to an air, process of oxidation occurs.

 That’s because an oxygen-reactive enzyme is found under the surface (skin) layer.

We can reduce oxidation by adding _____________________. 

finally search about oxidation watch the  videos: 

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