Showing posts with label Math. Show all posts
Showing posts with label Math. Show all posts

Friday, January 20, 2012

Quarter2

 Scientific Notation

Scientific notation is a way to write very small or very big numbers more simple and plainly.
The formula is C×1ⁿ and C is always 1≦C<10.
My real life example is about elements. Their mass are often really small that you can`t
scale them. But, I saw a scientific notation on the website which the mass  of a proton was
 written . Proton is a one of the smalles telement . If you write the mass of proton by not using
scientific notation, it represents as so big number.  But, to write the mass in scientific notation, 
it represents1.67 x 10-27kg. Now, you can see it clearly and you can imagine how big is the mass 
 and also compare with the mass of other elements.

The purpose of writing long numbers in scientific notation is to make the numbers looks simple and plain. By  making the number looks plain, it make s easier to guess how big is the number. It help reader to understand the fact easily.

I studied that scientific  notation is highly useful to quote physical quantities. To write physical quantities in scientific notation, you can write the numbers persuadely by changing the numbers simple and you can write the numbers shorter without wasting space.

I learned  more about scientific notation by writing this. I learned that it is used as well as in electric current such as calculators and many computer problem.

The activity related to my goal this year because I saw some scientific notation when I researched about an element on a science project. I didn`t know about scientific notation yet at that time, but now, I learned how to use and when to use them.




Wednesday, November 2, 2011

Quarter1

                      Real Life Example of coordinate Ch.2.8

My example of the coordinate plane is a map.
On the map at right side shows the picture of South America continent treasure chest, and ships. To put the map on the coordinate plane,it becomes easily to see the position of the ships.

Since I am able to know the position of each ships, I could know the gap between the treasure chest and the black, bigger ship. There are 3 gaps between the two objects.

I can also know the directon that the ships sailing. For example, the red smaller ship is sailing the east of the black bigger ship.

To use coordinate plane, it becomeseasier to determine te position and the direction of the ship.
From this example, I am able to know that the coordinate plane helps us in real life a lot.

                                        Reflection

The activity was on Chapter2 section 8. It was about coordinate plane.

The purpose of the activity was to have skills to plot points and ordered pairs in to the right location in coordinate plane, connect it to realworld by solve word ploblems.
 I learned the way to plot the points and describe its location in coodinate plane, learned new bocabularies such as coordinate plane, quadrants amd ordered pairs. On worded ploblem, it was littlebit hard, but it gave me idea that how coordinate plane used in the world.  

 I think I learned differently if I  remembered  the vocabularies for coordinate plane form last year, when I learned it, I think I did better. When I solove the problems, becasuse I don't know the vocabs of coordinate plane in English, I had to go back to the beggining page of the lesson to look for the meaning of  the vocabs.  But, finally before the exam, I learned the vocabs, and became to solove the problems quickly.

 The activity related to my goal this year.  I leaned coordinate plane and to connect it to real world example, I understood it deeply.



Tuesday, May 24, 2011

Quarter3

In this quarter, we did Chapter 8 of our textbook. In the chapter, we did about ratios, rates, slope, writing and sloving proportions, solving proportions using crosss products, scale drawing and models. And  after we learned, we had chapter test.

The purpose of the activity is to learn about ratios and rate. In next chapter, I learned about fractions, angles. In there, I used ratios and rate, too.

I learned about ratios, and slope. On the chapter test, I missed graphing of slope. I was thinking that I can find slope with run/rise, but actually I had to do slope= rise/run.

I leaarned more differently. I went class zone of the moodle and I  practiced with it.

It related to my goal this year. I already learned it when I was 5th grade, but I was already forgetting many things about slope and ratios. So, this time, I can review many things that I have to know.

Quarter4

In this quarter, I learned about geometric figures on Chapter 10. On Chapter 10, we learned about angles, special paira of angles, triangles, polygons, similar and congruent polygons and using proportions with similar polygons. We did test on Ch.10, Sec.1 to 4 on May 25th. There were so many new vocabs in Ch.10 and it was hard to remenber all of them. It was hard to remenber pentagon, hexagon, heptagon and octagon. Because, all of them are sound like same for me, but on the test I didn`t get wrong about polygons.

The purpose of the activity was to study about geometric figures and to take the test, see improve that before we studied about the chapter.

I learned many vocabs with defenishons and to know these words, we soloved many questions, forexample, to find each corresponding angles in picture, you can use supplymentary, or congruent. To learn vocabs on textbook, we can solove the problems on textbook easily.

The activity was related to my goal this year. I loved the study, because I love polygons and solove each angles.

Friday, May 20, 2011

Quarter1

In this quarter, I learned Addition, subtraction, multiplication and division. It was not hard for me, because I already learned them 1st grade to 3rd grade, in my home country.

The purpose of the activity is learn how to solove Addition, subtraction, multiplication and division.

I learned Addition, subtraction, multiplication and division in English.

Wednesday, October 27, 2010

Quarter1

1, I larned how do calculation, about area, perimeter,mean,median,mode,range,and many graphs.

2,The purposes are I have to calculate very well and I have to write graph people see well.

3,I learned order data see clear up.

4,I couldn`t learn about fraction very well.

5,I could learn about unusual words in English.

Sunday, October 24, 2010

Qurter1

1,I learned about a  moon, a sun, 8 planets , metors , comets and meteorites.

2.The purpose was we can know about space detailediy.

3.I learned about diometer,revolution,others about planets, metors,comets and meteorites when I made 
brochure.

4.I wanted learn about Earth more differently.

5.I  learned English when I read text book.