Social Studies 10 Waste

Posted on April 7, 2019 by saejino2016

What type of waste do you want people to be aware of?

I want people to be aware of about plastic waste.

How will you go about collecting the waste? Make sure there are recycling bin in public places. Where might you store it while you collect it? Recycling depots. How long will it take to assemble/disassemble? It will take to assemble for 2 months. What will be done with it afterwards? It will be recycled, and use to make new packaging and products. Will there be a standard time-frame? Two months. Will you be photographing it? Yes

What is the message you want people to get from your display?

I want that people realize seriousness of waste plastic.

Sketch what you think it will look like in the foyer.

Social study 10 reflection

Posted on March 14, 2019 by saejino2016

On this term, I learned about overpopulation and poverty. The world population is always increasing I was interested to learn about world population. So I could learn easier. When we learned about poverty, we usually watched video. It was funny and not boring, but I didn’t understand completely. I think that this things was interesting and not hard part.

The Human Condition : Cartoon

Posted on February 10, 2019 by saejino2016

In the “Cartoon” by Vegan Motorcycle Pilot, a man killed a little bug and he put snakes on his feet. He played basketball with chickens and he ate them. The man turned an elephant into a piano. He got somethings that were necessary for him by killing various animals. He threw away the chemicals into the ocean, so the ocean was polluted. Also, all the fish died. The man put a baby bear in steel-barred window, and he made the bear dance. He produced a lot of paper by using all trees, and he developed the forest into busy city. Many rabbits were turned into terrible appearance or they died due to makeup experiment. The man used many things that were bad for the environment. Eventually the environment was destroyed. Humans can be selfish and cruel. We need to get something that is wanted for us, we don’t care what creatures get hurt. This video shows that people have been killing many animals cruelly and shows the seriousness of environmental pollution.

Week 6 blog post

Posted on October 13, 2018 by saejino2016

On this week, I learned Solving Quadratic Equations, Using Square Roots to Solve Quadratic Equations, and Using the Quadratic Formula to Solve Quadratic Equations. Its form is $ax^2$ + bx+ c=0

Solving Quadratic Equations.The zero product property – a*b=0 (x+2)(x-7)=0 x+2=0, x-7=0 x=-2, 7 (2x+1)(3x-5)=0 2x+1=0, 3x-5=0 x= $\frac{-1}{2}$ , $\frac{5}{3}$ $x^2$ – 81=0 -> factor (x+9)(x-9)=0 x= 9, -9 $10x^2$ – 90x=0 -> Find a common factor 10x(x-9)=0 x= 0, 9 $x^2$ -9x -22 = 0 -> factor (x-11)(x+2)=0 x=11, -2

If the right side of the equation is not equal to zero, so expand the left side. Collect all terms on the left side to get 0 on the right side. Factor the trinomial. Use the zero product property.

ex) (3x+1)(x-6)=22 (3x+1)(x-6)-22=0 $3x^2$ – 7x-6-22=0 $3x^2$ -7x-28=0 -> factor (3x+4)(x-7)=0 x= $\frac{-4}{3}$ , 7

Using Square Roots to solve Quadratic Equations

Solve each equation. Verify the solution

$2x^2$ – 1 = 5 -> + 1 each side $2x^2$ = 6 -> divide 2 each side $x^2$ = 3 -> take the square root of each side x = $\sqrt{3}$ $2\sqrt{3}^2$ – 1 = 5 It is right. This example, a is 1. It is easy but If a is not 1, It will be very complex.

$\frac{-1x^2}{2}$ +6x -1 =0 -> Multiply each side by -2 $x^2$ – 12 + 2 = 0 -> half of the middle coefficient, then squared it $x^2$ – 12x + 36 – 36 + 2 = 0 -> factor the perfect square $(x-6)^2$ = 34 -> take the square root of each side x-6= +- $\sqrt{34}$ x= 6 ± $\sqrt{34}$

Using the Quadratic Formula to solve Quadratic Equation. In this chapter we have to know Formula. The formula is x= $\frac{-b+- \sqrt{b^2 - 4ac}}{2a}$ and a should be not zero. It can be used to determine the solution of any quadratic equation written in the form $latex ax^2 + bx + c = 0

$x^2$ + 2x + 1 = 0 x = $\frac{-2+- \sqrt{4+4}}{2}$ x = $\frac{-2+- 2\sqrt{2}}{2}$ x=-1+- $\sqrt{2}$

Week 5 blog post

Posted on October 7, 2018 by saejino2016

On this chapter, we learned Factoring Polynomial Expressions.

We learned important five words.

Common 15x+5xy -> 5x(5+y)

Difference of squares $x^2$ – 81 -> (x+9)(x-9)

Pattern $x^2$ +x+# $x^2$ +8x+12

product(12) sum(8)

1* 12 2*6
2* 6
3* 4

Easy $1x^2$

$x^2$ +17x+72 product(72) : 1*72, 2*36, 3*24, 4*18, 6*12, 8*9 sum(17) : 8*9 (x+8)(x+9)

Ugly $ax^2$

$5x^2$ -7x+2 product(10) : 1*10, 2*5 sum(-7) : 2*5 (5x-2)(x-1)

In Factoring Polynomial Expressions, there are some difficult case.

ex) $x^2$ +1.5x+0.5 -> $x^2$ + $\frac{15x}{10}$ + $\frac{5}{10}$

-> $\frac{10x^2}{10}$ + $\frac{15x}{10}$ + $\frac{5}{10}$

-> Find Common Factor $\frac{1}{2}$ ( $2x^2$ +3x+1) product(2) : 1*2 sum(3) : 1*2

-> $\frac{1}{2}$ (2x+1)(x+1)

In this case, we have to solve it this way. In this chapter, to find common factor is very important.

Week 4 blog post

Posted on September 30, 2018 by saejino2016

Sum this expression

$3\sqrt{5}$ + $4\sqrt{7}$ = $3\sqrt{5}$ + $4\sqrt{7}$

It can not be added, because it is same with x, y. Like 3x+4y. So it can not be added.

Sum this expression

$2\sqrt{3}$ + $6\sqrt{11}$ – $\sqrt{3}$ + $13\sqrt{11}$ = $\sqrt{3}$ + $19\sqrt{11}$

simplify this expression

( $3\sqrt{7}$ )( $2\sqrt{3}$ + $7\sqrt{13}$ ) = $6\sqrt{21}$ + $21\sqrt{91}$

On this chapter, I learned, the number in the root is same, it can be added and subtracted. But multiplication is possible to multiple that the number in root is not same. Also I learned new words. Like index, radicand, and radical.

$10\sqrt{15}$ In this root, index is 10, radicand is 15, and they are called radical.