Saturday, 8 February 2014

Math Unit #2 - Patterns And Algebra

In this unit, parts of it are things that I knew already, and parts of them are new ways to calculate. This unit is also a good unit for me to practise to do algebras, and it helped me do algebra very quickly, and how to sometimes do it in less steps. In this unit, we learnt:

  1. Vocabulary of algebra
  2. Gathering like terms (combining like terms by adding and subtracting like terms)
  3. Multiplying pronumerals
  4. Indicies/exponents
  5. Expanding (multiplying with grouping symbols)
  6. Factoring
  7. Using algebra
  • We learnt how to find patterns and how to use a pattern to solve an equation.


  • We learnt 20 definition of algebra vocabularies.

  • We learnt combining (adding and subtracting) like terms.

  • We learnt how to group/multiply pronumerals.
(12)(3n)=36n   (3a)(bc)=3abc   (3a)a=3a²
  • We learnt how to do division of pronumerals.

  • We learnt multiplying and dividing pronumerals in one expression in order to simplify it.

  • We learnt how to use algebra (like creating an expression for the perimeter of a square).

  • We learnt what is a power, what is an exponent, and what is a base.

  • We learnt six laws of indices (e.g. subtract the exponent if you are dividing two power with the same base).

  • We learnt how to solve an expression with indices with a substitute. We learnt how to simplify multiplications into powers.

  • We learnt how to expand and factorize an expression.

  • We learnt algebraic fractions.



Science (DIY) Glass Bottle Thermometer- How It Works And Other Reflections

In Science class yesterday, we made a (DIY) glass bottle thermometer. Although I didn't succeed in it, I understand how it works and why it didn't work for my mine.

Materials to do the experiment:

  • Tap water
  • Food colouring
  • Glass bottle
  • Beaker
  • Dropper
  • Ruler
  • Straw
  • Clay
  • Cooking oil
  • Hot water
  • Cold water
  • Thermometer
  • Marker


How to do the experiment:

  1. Mix food colouring to tap water, and fill the glass bottle with the solution.
  2. Place a straw into the bottle with about 4 cm in the water (at least 15 cm out of the water and not it should not touch the bottom of the bottle).
  3. Air-seal the the bottle mouth (like the picture below)
  4. Use a dropper to add more coloured water through the straw to the bottle, do it until you the water reaches 5 cm above the water in the bottle (actually 5 cm you can see, above the level of the clay).
  5. Drop a drop of cooking oil to prevent water evaporating.
  6. Place a real thermometer into a bowl of hot water, wait for the coloured water in the straw to reach its highest level and stopped moving. Now, check the temperature on the real thermometer and mark it on the straw, the spot where the water level in the straw is.
  7. Do the same thing except in cold water.
  8. Divide the two marks into 5 mm intervals, count the marks you have, and divide the difference of the two temperature by the number. Mark all the temperatures down.

How it works:
Its functions are just like the function in a real thermometer. When the water gets heat, the particles in the water has more the energy, they move around more and more violently, pushing each other away. At that time, the particles get pushed away, so they get further and further apart from each other. Hence, there is more and more space in between each of the water particles, and thus, the water expands. When the water expands, it naturally goes up the straw until it stops, or even until it flows out of the straw! The opposite thing happens when you put your (DIY) bottle thermometer into cold water. The water particles loses their energy and moves slower, they get close to each other eventually as they do not need space to move around anymore. As they get close, the water condenses, and it naturally goes down to a certain level.
The above is also the reason that a seal glass may explode when you put it in something hot. Especially when air particles move around more freely than solid particles. Air particles will need more space to move than solid particles need, relatively.
The above about the particles get far and close and the object expanding and condensing also explains why you put the lead hot water or the bottle in cold ice when you can't open the lead. It also explains how it works.

What are the uses of the different materials:

  • The use of the food colouring is only to let you see the water level in the straw clearer.
  • The use of the clay is to prevent air going in or water leaking and helps the DIY thermometer to be more accurate and the experiment to be more controlled.
  • The cooking oil is really important because it prevents the water inside the bottle from evaporating when it absorbs heat. This help keeping the water in. Otherwise, the water level rises slower (than what it should be) because the water is getting away.


Why didn't the one I made work:
It is just that it is hard to get the mouth sealed, especially that the clay I was using was keep on drying up and cracking. That's it, it can probably get fixed with more time.

How can the DIY thermometer be improved:

  • First of all, glass is not a poor conductor, so it might get bigger too in a short time. This may seriously affect the accuracy of the results. Although it may not because if the whole glass bottle is identical, where you marked your temperature has already included the expanding of the bottle, only if the glass bottle expand the same amount every time it gets the same heat (or condense when it gets cold).
  • Secondly, the clay also expands, this one is a more serious one, because it allows air to go in the bottle so the water leaks, which is going to mess up the whole thing.


Friday, 7 February 2014

Cultural Article- “Dos and Don’ts”- Hong Kong

Our second Humanities unit is culture. We are asked to then write an essay about our culture, telling tourists about the rules and etiquettes an dos and don'ts. Here is my essay.

Cultural “Dos and Don’ts”- Hong Kong


Please remember: Hong Kong people here is Hong Kong Chinese; Chinese here is Hong Kong people; Hong Kong is part of China
Welcome to Hong Kong- the eighth most technologically advanced city that shines day and night with high internet speed! It has 294 completed skyscrapers, which is the city the most buildings in the world. It has the ninth largest port. It has the 30th highest population, with a population density of 6415 capita/km² . Hong Kong is a Special Administrative Region in Southern China that is once ruled by the British, and Hong Kong speaks Cantonese. It is a really advanced city with many different religions and different people, and it has at least 50 tourist attractions to go- including an ocean park with real animals and exciting roller coasters, peak with the best views, beautiful sunsets on islands, antiquities and ancient buildings. All waiting for you! What a worth trip! To let you enjoy a successful trip in Hong Kong, let me tell you a several important cultural rules and cultural etiquette in Hong Kong.




MEETING AND GREETING


When you arrive at Hong Kong, no matter as a businessman or a relative or a guest, you may want to meet or visit someone first. Hong Kong people are usually friendly and do not talk about what you did wrong. However, to let both parties have a more relax, joyful and successful time, there are a few rules I am going to tell you about meeting and greeting.


Firstly, Hong Kong is a flourishing city with a lot of business to deal with, so they rush a lot. Therefore, being on time for an appointment is expected, early is usually acceptable but not too much. If you are late, apologise repeatedly even if it was not your fault. And if someone you are waiting for is late, give a courtesy time of thirty minutes.


Secondly, Hong Kong people may stand close when talking, but they are reserved and uncomfortable with body contact- Hugging, kissing or patting on others' back should be avoided. It is because public displays of emotions is especially embarrassing and uncomfortable for Chinese including Hong Kong people since old times.


Eye contact can be made of course, but avoid prolonged and direct eye contact. It is impolite to make prolonged or direct eye contact even if you are not staring because Hong Kong people feel awkward and uncomfortable with it. As said so, it is due to the tradition of no public displays of emotions. Lowering eyes with the head slightly tipped down, is a sign of respect because it is like bowing.


One reminder, Hong Kong people have their last name- surname said first in Chinese. Therefore, be careful you call them Mr. “first name”, for respect.


Last but not least, make sure you understand a party’s true feeling so there is no misunderstanding. In Hong Kong, saying “yes” may not mean an agreement, sometimes it actually means “I hear you” or “I get you”. And on the other side, Hong Kong people are non-confrontational and do not say “no” directly even if they disagree, they do so to not embarrass others. They sometimes sucks air through their teeth which means they are unhappy about your idea or opinion. They also say "it needs consideration" or "I am not sure about this". Make sure  you understand their true feelings, and do it their way too.


GESTURES


When you meet others, make sure you are giving the correct gestures in Hong Kong so you don’t offend them. Here I am telling you a two more important ones.


Firstly, when you are dining and someone fills your teacup, you express your thank by tapping on the table with three fingers- index, middle, and fourth. One finger represents bowed head, while the other two represents prostate arms.


Lastly, avoid pointing or using a finger to beckon someone since that is used for dogs. Instead, extend your arm with your palm down, and move your finger towards yourself. However, this is still impolite and unsuitable for elders. The way you beckon anyone who needs more respect- including elders, someone older than you, and someone with higher position- is to make a fairly short eye contact with them and bow, or nod slightly. It is the most polite way to beckon someone in Hong Kong.


GIFTS


When you visit others in Hong Kong, a gift or two are expected, and presents from your own tradition or region is especially appreciated. However, there are a lot of rules for giving gifts in China including Hong Kong, about how it sounds and how it looks and what it symbolises. Here I will tell you a couple more important ones that has more serious consequences.


Clocks of any type should be avoided because giving a clock in Cantonese (and “some other Chinese language” will be what I mean afterwards) sounds like the funeral rituals. Clocks also symbolise time running out. Hence, the end of relationships and lives are the messages sent when a clock is given as a gift.


Giving a green hat as a gift is extremely serious. It implies that a man's wife is unfaithful to her husband. It means that the wife has a relationship with whoever gave the green hat. This is because turtles hide their heads in their green shells; while the wife puts her head under the green hat. A turtle hiding its head is like a coward they say. Therefore, this means the man's wife is a coward and is unfaithful to her husband.


When giving gifts, please pay attention to numbers, because they sound like different words and represents different things, as Chinese care quite a lot about how they pronounce words. Gifts in 3 are good because “three” in Cantonese sounds like “life” in Cantonese. Gifts in 9 are good because “nine” in Cantonese sounds like “eternity” in Cantonese. Gifts in 8 are good because “eight” in Cantonese sounds like “prosperity” in Cantonese. Gifts in 4 are bad because “four” in Cantonese sounds like “death” in Cantonese. Odd number represents bad luck because they say "doubles makes pairs" which means people become pairs- which is a good thing- when there are even numbers. Odd numbers are the opposite of even numbers, so it meaning is the opposite, which is bad luck, and not good.


Last but not least, colours represents different things too, so be careful. White or black are often used in funerals as Chinese think they are too pure and has a boring, dull and depress atmosphere. Therefore, wrapping paper and envelopes in white or black should be avoided. Gold are lucky colours because Chinese like gold and gold is very rare, so if they get gold things, it represents they are very lucky and have a good fortune. Therefore, gold gifts and gold wrapping paper are good.


DINING


In Hong Kong, there is a whole lot of delicious food waiting for you to try- including fish-balls, siu mais, dim sums, pineapple buns, white radish cake, char siu rice, sticky rice and rice rolls. All these food that makes you drip! Still, there are a few etiquettes that you may want to know about dining.


Let me start with planting chopsticks in the food. To do so reminds people of the incense sticks standing up in the sand at Buddhist funerals. It is extremely impolite and should always be avoided.


Secondly, passing food from one pair of chopsticks to another is also impolite should always be prevented. It is because it resembles the way that bones are handled by families after the cremation of relation. If you want to pass some of your food to others, pick it up, place it on a separate plate, and let the other person pick it up with their own chopsticks.


Thirdly, turning a fish over while dining is inappropriate. Before then, people are mostly fishermans, they think when you flip the fish over, it looks like a boat capsizing, and it would be a really bad luck and bad incident to have a boat capsizing. Hence, they believe that turning a fish over brings really really bad luck and serious consequences.


Moreover, always leave some food in the serving plate, otherwise it is impolite. Also, leave some food in the plate when you are full to let the host know. If you do not do so and they do not know you are full, they will serve you more, and more, and more, because they always like people to be full!


Lastly, when you finish your food, and if you loved it and enjoyed it and think it is delicious, give a burp. Don’t be afraid, it is a compliment for the host and the cook, it means the food is delicious and you are full, as long as it’s not a long, disgusting one!


REFUSING AND DISAGREEING


You may hear Hong Kong refusing or saying “no” a lot even when it is about something good. Do not be worried, they do so because traditionally Hong Kong people are brought up to show humility always. Do not be scared, but go along with it and follow them.


Do refuse a gift or food or drink or anything that is offered, refuse a few times before accepting, otherwise it's considered greedy. Say “no” when you get a compliment to show humbleness and politeness, it just means “Oh, it is nothing really”. Do not agree others to pay the bill but fight to pay the bill. Hong Kong people consider it is good manner to attempt to pay the bill loudly and strenuously. If you do not do so, others may think that you do not want to pay for the bill and you are being greedy.



Follow the rules, make yourself a good impression to other Hong Kong people, and have a successful trip. Wish you a great trip in Hong Kong!




I will give a seven out of eight for my essay. My essay actually gives out a lot of information and explanation about the cultural rules in Hong Kong. I am not off-track, I justified. The essay is useful as it contains a lot of rules and explanation, it is attractive with the photos, and it's clear. I also took time in my research and did the bibliography properly. However, there is always improvement and I don't think it is 100% perfect, so I would give myself a seven out of eight which is pretty good.

Tuesday, 4 February 2014

Seurat-Description

Seurat-Description

We are doing a description of this drawing. The description is about the objects and what is in the drawing, and they are in French.
Le tableau s’appelle “La beau riviere”.
Dans le tableau, il fait beau et chaud.
Il y a une riviere.
Il y a un kayak sur la riviere.
Un garçon est sur le kayak.
Il y a un voilier derriere le kayak.
Il y a des arbre sur au bord de la riviere, il y a des feuilles sont sur les arbres.

Derriere les arbres, il y a un chateau.

Student Invented Sport- Airball

In this PE unit, we are doing team-sports. And we are asked to create our own sports in groups. Our game is called the footleyball at first. We first came up with the idea of combining volleyball and football. Like the whole game is like football except you have to keep the ball up like how you do in volleyball. However, after a couple of discussions. We found a way to make it much better and much more unique. You want to know? Please watch the video below.


If you don't get the whole thing after watching the video, please look at these points:

Our game is called the Airball, now.
  1. Airball uses the futsal court, and a dodgeball. Airball starts with throwing the ball up in the centre.
  2. Players have to keep the ball up in the air, they can use any parts of their body to do so.
  3. Whenever the ball touches the ground, anyone can pick it up and play on. However, If the same team continuously drops the ball onto the ground three times, the ball has to switch to the other team.
  4. There are one goalie, two defence, one mid, and two attack, there are no locked areas for any player.
  5. You can take the dodgeball from the other team when they are passing, or you can pick it up, or when it's in the air… basically all the time.
  6. Shooting, for example: If any team-mate passes the ball to A1 (attacker one), and A1 sees A2 is ready to shoot. A1 holds the ball at the first touch (has to be) (the other team can snatch it), he then throws it to A2 and A2 hit the ball in goal.
More information:
  1. You can only hold when you get your ball from your team-mate or they pass it to you, and only attackers can hold balls. And basically no team can hold the ball continuously.
  2. If the ball gets out of the futsal court, the other team gets the ball, go to the spot where the ball went out, throw it in the air, and hit (pass) it to a player.
  3. You can't take the ball from a team and hold it., even if your shooting.
  4. If anyone breaks the rule, the game starts again in the circle (but marks stay same of course).
  5. You can snatch, bump and there's no need for distance or stuffs…

We got to play our Student Invented Sports (SIS), which is Airball. We found a couple of things can be improved:
  • There is no more complicated shooting anymore, so for shooting just shoot. Thus, there is no holding the ball or anything anymore.
  • But no one at anytime can go in the semicircle except for the goalie, but the goalie can go anywhere (well it's better to stay in goal sometimes).
  • And we found out it is hard to count the "same team drop the ball thrice in a row" thing. Therefore, we change the rule. If a team drop the ball on its side, anyone can pick it up. But when a team drops the ball on the opposite side, the other team gets it.
  • We found that two attackers are too difficult to handle because there is only two of them but they cannot drop the ball. And we found that the mid is kind of useless in the futsal, and the futsal is too small to have a mid. So the mid becomes an attacker. So there is 1 goalie, 2 defence, and 3 attackers.

Monday, 3 February 2014

Math Unit #1 - Fractions, Decimals and Ratios

The first unit of the year is "Fractions, Decimals and Ratios". I actually learnt most of the things in this unit before so I actually take this unit as a review, and I am sure I got better in what we learn in this unit somehow. I was good in the whole unit and I know everything I learnt and is confident in it. In this unit, we learnt:
  1. Fraction
  2. Percentages
  3. Ratios
  4. Rate
  5. Scale
  6. Sector graph (pie chart) and histogram

  • We reviewed how to make or form or estimate a percentage, decimal, ratio or fraction by looking at an object: Like how many percent is in colour, how full is a bottle, how much is the wall painted...

  • We learnt how to convert percentages, decimals, and fractions, to each other.

  • We leant how to calculate a number by "multiplying, dividing, adding, and subtracting" it with a decimal, fraction, percentage, ratio.
37%     18/39 3.6

  • We learnt how to create a ratio and the different forms of ratio.

  • We learnt how to convert a rate to different units, calculate and form a rate...
1 2/3 km/min=100km/h=100000m/h
  • We leant how to make a scale or use a scale to calculate sizes, length...
1:100=1cm:1m
  • We learnt use percentages to make a pie chart. We learnt how to make a histogram.