Category Archives: Grade 9

SSEP Reflection

Science 9
SSEP REFLECTION
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Define: In our groups, we wanted to know what would be the effect of bacteria in microgravity, and if it would be the same as the one on earth.
Discover
We did some research to some groups that have participated before in the SSEP, then we did a review of them and got some new ideas, we learned about how the process would go, and what we had to do.
Dream
Then we did some brainstorms in our groups to know what biological, chemical or physical system we would like to explore with gravity seemly turned off for a period of time, as a means of assessing the role of gravity in that system. We thought that bacteria would be a great system to explore and learn.
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Design and Deliver
We searched through a lot of websites to know more about the topic and to learn more about bacteria, we also tried to contact a specialist in bacteria, but we couldn’t contact him, so we did some experiments with bacteria from the sink, the phone, the table and the floor. Then we wrote our proposal to submit to the SSEP committee.
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Debrief
We think that maybe we could have used more time to do the proposal and examine what we wrote. And maybe we could have done contact with previous groups that have participated in the SSEP before.

Electricity Mind Map

Science 9,

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Questions:

1. Are we going to have enough power to meet our future needs?

2.Why isn’t electricity considered a primary energy source?

3. How do you remove static electricity?

4. What is a battery and who invented it? Why?

5.How many types of electricity are in total?

6. When we turn off lights, etc. is electricity still working?

7. What’s the difference between a parallel and series circuits?

 

What I learned this week

Math 9

This week, I learned about the exponents laws, and here are some of them:

Rule: When multiplying powers with the same base, you add the exponents.

1) 5^3 • 5^4 = 5^7

5•5•5•5•5•5•5= 5^7

2) 3^3 • 3^2 = 3^5

3•3•3•3•3= 3^5

 

Rule: When dividing powers with the same base, you subtract the exponents.

1) 5^5 ÷ 5^3 = 5^2

2) 5^7 ÷ 5^4 = 5^3

 

Rule: To raise a power to a power, multiply the exponents.

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Rule: When a product is raised to an exponent, you can rewrite each factor in the product with the same exponent.

( 3 × 2 ) ^3

( 3 × 2 ) ( 3 × 2 ) ( 3 × 2 ) = 3^2 • 2^3

Rule: When a quotient is raised to an exponent, you can rewrite each number in the quotient with the same exponent.

1) 5^4 ÷ 5^4 = 5^0 = 1

Rule: When the exponent of a power is zero, the value of the power is 1 (as long as the base is zero)

[ 2× ( -3 ) ] ^5

= 2^5 • (-3)^5

= -7776