Sok Lang's Math Parent Quiz Post

Here are the questions.

Ratio Rate Proportion (Link to your Proportion Post)
Peter runs 200 m in 30s while his sister Eva runs 300 m in 36s.

• Who is the faster runner? Explain how you can tell.
• At the same rate, how far will each runner go in 2 minutes?

  Percent (Link to your Percent Scribepost)
A bicycle is on sale for 10% off the origional price of $420. when it does not sell, the store reduces the sale price by another 5%.  What is the final price of the bicycle?

Surface Area
Calculate the Surface Area of the net below.

Fractions (Connect to your Fraction Scribepost)
Chad likes to eat Honeycomb for breakfast every day.  He eats 3/4 of a box per week. 

• How much of the box does he eat each day?
• How many boxes of Honeycomb does he eat each year?

Algebra Equation Solving(Connect to your Algebra Unproject)

Read more: http://sargentparkmathzone.blogspot.com/#ixzz2Qm3nfR66
Under Creative Commons License: Attribution Share Alike

Jandro's and Soklang's unproject

2 step Multiply 2x+1=9 The first thing we should do in a 2 Step Multiply is to Isolate the Variable and this is what it should look like. 2x+1-1=9-1 Now that we have done this, 2x = 9-1 which is 2x = 8 9 Now that we have we have 2x = 8 we must do the opposite operation to get the value of x. Since 2x is multiplying, we must divide 2x by 2 and do the same to 8. The result we end up with would be x = 4. If you were to write it down it would look like this. 2x = 8 2x / 2 = 8 / 2 x = 4 Now we must Verify our theory 2x + 1 = 9 2(4) + 1 = 9 8 + 1 = 9 9 = 9 We also have to model this equation too and this picture will show you how: And that is how we solve 2 Step Multiply equations. 2 Step Divide x/2 + 4 = 9 What we must do is isolate the variable again. The steps are very similar to 2 Step Multiply. Since there is a positive 4, we must do the opposite operation and subtract 4 from 4 and subtract 4 from 9. x/2 +4-4 = 9 - 4 x/2 = 5 And now since theres division in this equation we must do the opposite operation which is Multiplication This is what it would look like: (x/2) x 2 = 5 x 2 x = 10 Now we must verify our answer again ( Note: We must Verify all the time in all algebraic equations) x/2 + 4 = 9 (10) / 2 + 4 = 9 5 + 4 = 9 9 = 9 That my friends is how we solve 2 Step Divide equations Distributive 2(x+4) = 10 For Distributive, we must multiply whatever is inside the brackets by whats outside of the brackets. In this case it would be 2 x (x) and 2 x 4. After you have done the steps, it should look like this: 2 x (x) = 2x 2 x 4 = 8 2x + 8 = 10 Now that we have a 2 Step Multiply Equation, all we have to do is the steps to solve a 2 Step Multiply Equation. The steps should look like this: 2x + 8 - 8 = 10 - 8 2x = 2 2x / 2 = 2/2 x = 1 Now we must Verify our answer. 2( x + 4) = 10 2 ( 1 + 4) = 10 2 (5) = 10 10 = 10 And that is how we do Distributive Equations!!!!! Important Vocabulary Words Co-efficient- Is any certain number that you can multiply a variable with, the co-efficient can be negative or positive.(example) 2x + 1 = 9 Constant - Are any numbers that are a part of the equation. They always stay the same. (example) 2x +1 = 9 Variable- Is any letter that can represent any unknown number. ( example) 2x + 1 = 9 If you are still having trouble with 2 step multiply and division, I suggest you watch this:) http://www.youtube.com/watch?v=HyUiYeLee3g If you are still having trouble with Distributive Property I suggest you watch this video:) http://www.youtube.com/watch?v=zv4qbeLok-M thank you for looking at our unproject. Jandro and i had a great time doing this.

Jamdro and Sok Langs Unproject

" Unproject" Project
By: Sok Lang Pov and Jandro Austria


2 step Multiply

2x+1=9 

The first thing we should do in a 2 Step Multiply is to Isolate the Variable and this is what it should look like.

2x+1-1=9-1

Now that we have done this, 2x = 9-1 which is 2x = 8
9
Now that we have we have 2x = 8 we must do the opposite operation to get the value of x. Since 2x is multiplying, we must divide 2x by 2 and do the same to 8. The result we end up with would be x = 4. If you were to write it down it would look like this.

2x = 8

2x / 2 = 8 / 2

x = 4 
 

Now we must Verify our theory

2x + 1 = 9

2(4) + 1 = 9

8 + 1 = 9

9 = 9 

We also have to model this equation too and this picture will show you how:

 And that is how we solve 2 Step Multiply equations.
 

2 Step Divide

x/2 + 4 = 9

What we must do is isolate the variable again. The steps are very similar to 2 Step Multiply.  Since there is a positive 4, we must do the opposite operation and subtract 4 from 4 and subtract 4 from 9.         

x/2 +4-4 = 9 - 4
 
x/2 = 5

And now since theres division in this equation we must do the opposite operation which is Multiplication

This is what it would look like: 

(x/2) x 2 = 5 x 2

x = 10

Now we must verify our answer again ( Note: We must Verify all the time in all algebraic equations) 

x/2 + 4 = 9

(10) / 2 + 4 = 9

5 + 4 = 9

9 = 9  

That my friends is how we solve 2 Step Divide equations


Distributive

2(x+4) = 10
For Distributive, we must multiply whatever is inside the brackets by whats outside of the brackets. In this case it would be 2 x (x) and 2 x 4. After you have done the steps, it should look like this:

2 x (x) = 2x

2 x 4 = 8

2x + 8 = 10

Now that we have a 2 Step Multiply Equation, all we have to do is the steps to solve a 2 Step Multiply Equation. The steps should look like this: 

2x + 8 - 8 = 10 - 8

2x = 2

2x / 2 = 2/2

x = 1

Now we must Verify our answer.

2( x + 4) = 10

2 ( 1 + 4) = 10

2 (5) = 10

10 = 10

And that is how we do Distributive Equations!!!!!    
  
Important Vocabulary Words

Co-efficient- Is any certain number that you can multiply a variable with, the co-efficient can be negative or positive.(example) 2x + 1 = 9 

Constant - Are any numbers that are a part of the equation. They always stay the same.
                  (example) 2x +1 = 9

Variable- Is any letter that can represent any unknown number.
                ( example) 2x + 1 = 9 

If you are still having trouble with 2 step multiply and division, I suggest you watch this:)

http://www.youtube.com/watch?v=HyUiYeLee3g

If you are still having trouble with Distributive Property I suggest you watch this video:)

http://www.youtube.com/watch?v=zv4qbeLok-M

( I could not post the video because firefox and windows explorer would not let me post but only let me link the videos.....sorry D: )

Well we hope you enjoyed our presentation and we hope we have helped you understand Algebra- From your wonderful classmates, Sok Lang and Jandro :)

Soklang's Scribepost

Soklang's Pay It forward

Part 1

What is "Pay it forward". To complete this part please edit and revise the paragraphs that you wrote after watching the movie.

I think Pay it forward means one person takes the liberty to help 2 or 3 people. The people that you helped help 3 more and then 3 more and so on.  The phrase "Pay it forward" isn't just 3 words, Pay it forward has a really big meaning to it. It’s about helping the less fortunate. I believe that everybody in the world has an equal right to have the things we have today such as electronics, clean water, warmth, a house. Most people in the world don't have that kind of stuff due to the laws in their country or it’s because they can’t afford it. Pay it forward also means that people helps others and asks for no reward in return.

Part 2

What was your Pay It Forward act of kindness?

Why did you choose this activity?

Who did you help?

What did you do?

When did you do you act of kindness?

My Pay It Forward act of kindness was donating a bunch of clothes to the Salvation Army.

I choose the activity because most people in the world have no clothes which mean they have no warmth and I think it’s unfair that we people in Canada have clothes and warmth and the people in a poor country don't have the things we have. I think it’s only fair if I have clothes everyone else should have clothes too.

I help the less fortunate families that don't have clothes or warmth.

I put a pile of clothes in a bag and I gave it to the poor

I did my act of kindness at Monday November 26, 2012 (around 3:30)

These are the clothes i donated.

Part 3

How did your act of kindness go?

What Happened?

How did you feel?

How did the person or people react?

Did you ask the person or people to "Pay It Forward"?

How did they react to your request?

If you did not ask the person to "Pay it forward" how come?

My act of kindness went very well. The people at Salvation Army were smiling, and I felt great.

When I arrived at the Salvation Army. People were smiling at me.  When I gave the bag to the person in charge to deliver to the poor.

I felt generous I was very happy when I gave the person in charge my donation. It feels good to help a family in need.

Well I don't really don't know how the people I helped reacted considering that the clothes are delivered to them. But I bet their happy.

Well I asked the person who I gave the clothes too. (The person in charge) I told the person in charge please Pay it Forward.

They didn't know what I meant by Pay it forward. So I explained them what it meant.

Part 4

Why is the idea of "Pay it Forward" important?

Has your act of kindness made a difference? 

Pay It Forward is very important and it made a big remarked in my Society. It’s nice to give and make someone very happy. It’s important because people don't know that there are poor families in the world that don't have what we have and that they should have the same things we have.  

My act of kindness made a huge difference.  The one family that I donated to must have been very happy because there are still families out there that are starving and in need of warmth and shelter.

Too end off this post I'd like to say that 

I'm very thankful to have the things I have and that helping another family can change the world.

Soklang's Integer post

there are three ways you can add integers. 1.you can use dots or circles

2.you can use the number line (this is the best way in my opinion)

3.you can use words (or use money in a way)

Soklang's Fraction test correction

Soklang's fraction scribepost

feel free to leave a comment, and maybe add whatever i missed on dividing fractions. thanks and enjoy. Soklang's Fractions test corrections.

Soklang's fraction alphabet book

Soklang's Proportion Post

PART 1- definitions 

Ratio-A comparison of 2 quantities that have the same unit of measure.





Rate-  A comparison of 2 quantities that have different units of measure.



 


 Proportion-An equation which states that two ratios are equal. 1000 km/ per 100 hours

PART 2-Copy these questions into your post.  Answer them using proportion statements.

 1) 5 hours to travel 360 kilometers is about _____km/h
 
2) Emma saves 28 cents of every dollar that she earns.  Emma earned $75 last week.  How much money did Emma save last week?
 

PART 3-What are the three ways you can prove that equivalent ratio statements are true?

  PART 4-Find a video about using proportion and embed it in your posts

 

PART 5

 1) it not fair at all.
 2) it dose not seem fair and just
 3) this isn't fair because the homeless man stole $100 to live and he was sent to jail for 15 years. on the other hand the CEO was sent to jail for only 40 MONTHS for $3 billion fraud.
 4) if i were the judge i would have sent the CEO for 25 years of fraud. for the homeless man i wouldn't send him to jail i would sentence him not guilty and let him free.


bonus question

 
  question: how tall is the trees.
answer: i guessed that this boy is about 12 years old. So i did some research and i found that an average 12 year old boy is about 5'3 so i did some calculations. if you stacked the boy in front of the trees there would be 3 boy stacked on top of each other.

5.3x3=15.9. so the trees must be 15.9 ft tall.