1. Scientific Inquiry

2. Why Scientific Inquiry?
To make fair decisions

3. Some Announcements !!!
Make notes during this activity , tomorrow you are going to have a little quiz.
Then we will discuss this topic in detail.
I will do another magical activity, so be prepared to have some fun as well 

4. Steps for Scientific Inquiry
Making Observations
Stating an Hypothesis
Making a Prediction
Identifying Variables
Designing a Fair Test
Forming a Conclusion

5. Making Observations Observe the pencil carefully
Is it different from other pencils
How is it different?

6. Identify the Problem When you rub this pencil it changes its colour
It goes back to its original colour when you stop rubbing it.

7. Stating an Hypothesis
Give one reason why this pencil changes its colour
(5 min.)

8. Identifying variables
Colour
Material
Wood type
This Pencil is not sharpened but others are
Temperature may be
…….

9. Designing a Fair Test
We can try all the hypothesis one by one. For example: I can sharpen the pencil and see whether it stops changing colour. (I know it is not going to change its colour anyway) What if I consider a different temperature A person having relatively low temperature can rub it in his/her hands (it will not change its colour)

10. Conclusion
Why pencil changes its colour? Ans. Due to increase in temperature. Your hands are warmer than the pencil. A cold substance emits different colour and a warmer substance emits different colour. This phenomenon is not visible in all the pencils. This pencil is designed particularly to show this phenomenon. The paint is different from regular pencils.