April 29

Math Revision Blog Post

*(@^<>^@)*       @<(!)>@        #(:<^-^>:)#       (^&-^^-&^)

(PS: That’s the introduction by the way 🙂 )

So, back to business, our current topic is Measurement & Probability.

For measurements, to calculate a triangle’s area, you just times the length with the hight then divide them by two. Like this : length x hight / 2 = Area. Also 1m=100cm, 1cm=10mm; 1000m= 1km.

For probability,

There are 5 main words in probability, they are:

  1. Impossible – it will NEVER happen.

  2. Unlikely –  not likely to happen.

  3. Even chance – 50% chance of accuring.

  4. Likely –  quite likely to occur.

  5. Certain – Will occur or happen.

Now, question time.

Measurements: Q1, Area of this triangle: H- 13 L- 21; Q2, 1243m= ( )mm;

Probability: Q1, Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn has a number which is a multiple of 3 or 5?  Q2, A bag contains 2 red, 3 green and 2 blue balls. Two balls are drawn at random. What is the probability that none of the balls drawn is blue?

I enjoyed doing the probability unit the most. Because in measurement unit we need to calculate a lot I’m not really good at.

 

 

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March 15

Math —- Packaging Product Video

We were working on a video for math class in the last couple days. We were learning about areas and measurements. This is video is about my team making and introducing a kind of bottle that contains a special kind of drink. Enjoy. 🙂

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February 28

Our Introduction To Measurement

The unit question for this unit measurement is “How can we calculate using measurement”. We have a lot of tools of measuring like rulers, clocks, thermometers and watches.

I use online stopwatches to calculate time.

Factual question: what does the unit “mm” stands for?

Conceptual question: how do you calculate the area of a rectangle.

Debatable question: is internet a good tool of measuring?

There are three different main unit of measuring the length. They are centimeter – cm, meter – m, kilometer – km. (I ordered them from small to big by the way. 🙂 )

For example, using a rule to measure the length of the table. Which has those units on it.

Photo on 2-28-14 at 2.49 PM

If you want to measure a area of a rectangle, you just times the length (blue line) with the width ( red line).

Photo on 2-28-14 at 2.56 PM 

If you want to measure a square’s area, it’s really easy. You just times any of the edges of that square with it’s self.

If you want to measure a triangle, like this.

Photo on 2-28-14 at 3.06 PM

 

You just time the length and width and devoid it by 2. Because it’s just a half of this rectangle.

Photo on 2-28-14 at 3.05 PM

 

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January 22

Comparing Decimals

Hey guys today I am going to tell you the correct way of reading decimals and the wrong way of reading decimals (which you should not use).

1. Printing Machine

Printer

112.5cm in length. As you can see we had measured the printer on the side. We can also say that it is 1.125m. These are the same things but they just change the decimal place and measurement. This is a appropriate way of showing it. Here is an inappropriate way of showing it —-> 0.001125km. This is way to complicated as it is a huge measurement.

2. Chair

Chair

77cm in length. This is the correct way of showing the measurement. I you show your measurement like this —> 7.7 decimeter. This is probably not the best because decimeters is a confusing for many people.

3. Earthquake Helmet

Helmet

26cm in length. This one way of showing the measurement. You can also say 0.26m. Although 26cm is better. 260,000,000 nanometers is also 26 centimeters but this is just you know waaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaay tooooooooooooo COMPLICATED!!!!!!!

So people, use the correct way of showing your measurement otherwise you will be having many comments.

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November 29

Our introduction of fraction

 

Do you know what is fraction? No? Me neither. Just joking. 🙂 Of course I know, and if you ask me which means you are asking the right guy.

This is a friction, up is numerator and below is denominator.

From Math work

 

For example:

Math work

I’ve got two red marker pen on my right hand and one blue marker pen on my left hand. That’s an example of frictions. Guess what friction is that……………. Yes, YOU ARE RIGHT, it’s 1/2.

Now, a more complex example. I have 15 pencils in total and 13 of them is color pencil on the right side of the photo. So the color pencil is 13/15.

From Math work

 

Now is really important, because I’m going to show a WRONG example.

From Math work

Look, my homework paper is on the left!! And my friend’s paper is on re right!!.

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