Wednesday, December 21, 2011

You Light Up My Life

God is so wonderful and faithful. Without our realization, God enlightens us through someone experiences and brings hope to our life. I just feel that sometimes God sends angel to help me whenever I am hopeless in finding solution. May your soul and life be blessed richly and abundantly while seeking God's righteousness.

Monday, December 12, 2011

Simple Maths But Difficult To Solve

Can you solve it ?

Three men went to a hotel to share a room.


The clerk asked for $300.


Each man paid $100, making up the $300.


The hotelkeeper then decided to allow a discount for the day, charging only $250 for the room.


He told the clerk to return $50 to the three men.


The clerk pocketed $20 for himself. He gave the remaining $30 back to the three men.


Each man took back $10. Therefore, each man paid 100 - 10 = $90 to the hotel.


$90 x 3 = $270 + the clerk's $20 = $290.

Question: Where has the remaining $10 gone?

Sunday, December 11, 2011

Check Your School Result

Sunday, November 20, 2011

Another Flip-Flop from Education Ministry

9-hour policy should never have existed, says Teachers’ Union

KUALA LUMPUR, Nov 20 — The National Union of the Teaching Profession (NUTP) lauded the government’s decision to do away with the nine-hour workday for school teachers, saying it was unnecessary and should not have been implemented in the first place.  Education Minister Tan Sri Muhyiddin Yassin announced yesterday that the project had been discontinued. 

The deputy prime minister said the decision was made in order to allow the government to evaluate a study conducted on the project which first began with 19 schools in Malacca. “There are a lot of reasons why the nine hour policy is not practical. Making it compulsory for a teacher to be in school for that long is not practical,” NUTP president Hashim Adnan told The Malaysian Insider today.

He urged the Education Ministry to consult workers’ unions in the future before deciding on policies affecting teaching as it could affect the government’s image if there was a sudden change of plans.
“We hope the Education Ministry will discuss matters with us first if they want to implement things like this in the future to avoid the government’s image being affected if policies like this are cancelled before they are actually implemented,” Adnan said. He added the latest announcement showed a weakness in the Education Ministry’s decision making process.

Adnan also said teachers actually worked more than nine hours a day on average if working on public holidays and during formal examinations were taken into account.  “In most schools, there are not enough facilities provided for all teachers to be in school for nine hours,” Adnan added. The new policy would have been implemented January 2012 onwards in four states — Melaka, Sarawak, Pahang and Johor — and would have affected 5,000 teachers from primary and secondary institutions. The policy required morning school teachers to be in school from 7.30am until 4.30pm whereas afternoon school teachers were required to be on duty at 9.30am to 6.30pm.


Physics Form 4: Chapter 5 - Application of Convex Mirror


  • A convex mirror has a wider field of vision than a plane mirror.
  • Therefore, it is used as the side mirror of a car, surveillance mirror in a shop and blind corner mirror at a sharp bend road.




Sunday, November 13, 2011

Teachers’ union says no to 9-hour policy

November 13, 2011 The Malaysian Insider
KUALA LUMPUR, Nov 13 – The National Union of the Teaching Profession (NUTP) today urged Putrajaya to revoke the nine hours a day teaching policy for school teachers, as a study has shown it was not beneficial. NUTP also said that the new policy was not suitable at the moment as many schools lack comfortable facilities for teachers.

The new policy will be implemented January 2012 onwards in four states – Melaka, Sarawak, Pahang and Johor – and will affect about 5,000 teachers from primary and secondary institutions. NUTP president Hashim Adnan the new policy would not bring positive results if school facilities and workload of the teachers were considered. “Moreover, teachers are not compelled to work nine hours a day like other services. As the minister said (today), teachers have to have enough rest and they actually work more than nine hours,” he told The Malaysian Insider today. Hashim added that the policy was not popular among teachers, therefore “why should the government go ahead with it?”

He explained that the education ministry should conduct a study before implementing the policy. Under this new policy, morning school teachers are required to be in school from 7.30am until 4.30pm whereas afternoon school teachers are required to be on duty at 9.30am to 6.30pm. Yesterday, deputy education minister Datuk Dr Wee Ka Siong had urged teachers not to ‘panic’ with the new policy. However, Hashim said it was best to forgo the new policy.

“These early signs show that the policy is not going to work, so just revoke it. It’s a waste of time to conduct the study,” he said, adding he hoped the public service department will look into this case especially the facilities at work. “If we were to sit at work for nine hours, we need to have comfortable facilities. Staff in other agencies have tables, a comfortable environment, but not in schools.”

Thursday, November 10, 2011

Physics Form 4: Chapter 5 - Application of Concave Mirror

Commonly, concave mirror can be used as a reflector and enlargement mirror.

A) As a enlargement mirror
  • When the object is placed less than the focal length of a concave mirror, a larger, upright and virtual image is formed.
 

Dental Mirror
Make-up Mirror

Shaving Mirror

 B) As a reflector
  • When the object is placed at the focal point of a concave mirror, the reflected light rays are parallel and able to produce a strong beam of light.



 Car Headlight

Concave reflectors are used in car headlights. The bulb of the head light is placed at the focal point of the reflector. The reflected light emerges in a parallel beam and gives more concentrated visibility to the driver at night.


 

Parabolic Dish

Concave mirrors are used in solar powered gadgets. The parallel rays of the sun are reflected to focus at the focal point F. The solar energy concentrated at F is then used  or converted (for example into electrical energy by a solar cell) by the gadget

Look at the mirror! A shinny and smooth surfaced mirror act as a good reflector

Tuesday, November 8, 2011

Schools in Penang to form Education Council

 

The Star newspaper, Tuesday 8 Nov 2011


CONSULTATIVE council will be set up in the state to “discuss, debate and research” policies proposed by the Education Ministry. Representatives from some 20 primary and secondary schools here have agreed to form a council soon in the interest of the future generation.

Among the schools were SMJK Perempuan Cina Pulau Pinang, SMK Methodist (Perempuan), SMJK Phor Tay, SMJK Chung Ling, SMK Convent Pulau Tikus and SMJK Jit Sin Butterworth.

Parent S. Krishnan, 51, who was representing SK St Xavier Air Itam, urged all schools in the state to be part of the council. “The council will be formalised soon and we urge all education stakeholders, especially the schools and Parent-Teacher Associations (PIBG), to join us. “I hope similar councils can be established in every state,” he said at the Teaching and Learning of Science and Mathematics in English (PPSMI) press conference here on Saturday.

The father of six, who is also member of the Parent Action Group for Education Malaysia (PAGE) Penang chapter, said education should not be politicised. He said only educationists should be put in charge of issues related to education. PAGE Penang chapter coordinator Rowena Yam said the details of the council would be worked out before it is formally registered. “The council will meet from time to time to give input on matters pertaining to education,” she said.

Monday, November 7, 2011

Chemistry Form 5: Chapter 2 - Dehydration of Alcohol

ALCOHOL -------> ALKENE

  • In the dehydration of alcohols, a molecule of water is eliminated from each alcohol molecule to produce alkene.
  • There are two methods of dehydration:
a)      Ethanol vapour is passed over a heated unglazed porcelain chips, porous pot, pumice stone or alumina (aluminium oxide).
b)      Ethanol is heated under reflux at 170 °C with excess concentrated sulphuric acid.
 
School Laboratory Experiment


  • Alkene can be tested by decolourising brown bromine water or decolourising purple acidified potassium manganate (VII) solution.

Saturday, November 5, 2011

PPSMI Students Can Continue to Form 5

PUTRAJAYA (Nov 4): The Cabinet has agreed to allow all students in the Teaching and Learning of Science and Mathematics in English (PPSMI) cohort to continue learning the subjects in English until Form Five.
Deputy Prime Minister Tan Sri Muhyiddin Yassin said on Friday this meant that primary school pupils in the PPSMI cohort could opt whether to continue learning Science and Mathematics in English or Bahasa Malaysia, or in both languages when they enter Form One beginning next year.

"Thus, the teaching and learning of Mathematics and Science in primary schools will only be implemented fully in Bahasa Malaysia in 2016 while in secondary schools it will be implemented in 2021. "With the decision, the abolition of the PPSMI is upheld. The government does not intend to reimplement the PPSMI as demanded by certain groups," he said at a media conference.

He said that the government hoped the decision to allow the PPSMI cohort to continue learning in the English Language up to Form Five could please the
parents. - Bernama

Friday, November 4, 2011

Physics Form 5: Chapter 4 - Measuring Voltage and Time Period using Oscilloscope

  • The Y-GAIN (VOLTS/CM) control determines the height of the trace. Choose a setting so the trace occupies at least half the screen height, but does not disappear off the screen.
  • The TIMEBASE (TIME/CM) control determines the rate at which the dot sweeps across the screen. Choose a setting so the trace shows at least one cycle of the signal across the screen.

  • Amplitude is the maximum voltage reached by the signal.
    It is measured in volts, V.
  • Peak voltage is another name for amplitude.
  • Peak-peak voltage is twice the peak voltage (amplitude). When reading an oscilloscope trace it is usual to measure peak-peak voltage.
  • Time period is the time taken for the signal to complete one cycle.
    It is measured in seconds (s), but time periods tend to be short so milliseconds (ms) and microseconds (µs) are often used. 1ms = 0.001s and 1µs = 0.000001s.
  • Frequency is the number of cycles per second.
    It is measured in hertz (Hz), but frequencies tend to be high so kilohertz (kHz) and megahertz (MHz) are often used. 1kHz = 1000Hz and 1MHz = 1000000Hz.
    frequency  =           1             and     time period  =           1        
    time period frequency
--------------------------------------------------------------------------------------------------
Example of measurement:


Measuring Voltage
Voltage = distance in cm × volts/cm
Example: peak-peak voltage = 4.2cm × 2V/cm = 8.4V
amplitude (peak voltage) = ½ × peak-peak voltage = 4.2V




Measuring Time Period
Time = distance in cm × time/cm
Example: time period = 4.0cm × 5ms/cm = 20ms
    and   frequency = 1/time period = 1/20ms = 50Hz


Thursday, November 3, 2011

Chemistry Form 4: Chapter 9 - Making of Alloy

An alloy is a mixture of two or more elements with a certain fixed composition in which metal is the major component.

The making of alloy is:
  • To increase the strength and hardness of a pure metal.
  • To prevent corrosion.
  • To improve the appearance of a pure metal.

Pure Metal


·     Pure metal is made up of one type of atoms that are in same size. Therefore, when a force is applied, the layers of atoms can slide over one another. Thus, metals are ductile or can be stretched.

·     There are some empty spaces in between the pure metal atoms. When a metal is knocked or pressed, groups of atoms may slide and then settle into new positions. Thus, metals are malleable or can be shaped.




Alloy
·     Some of the spaces between the metal atoms are filled up by the foreign atoms which may be bigger or smaller than the original metal atoms.
·     The presence of foreign atoms disrupts the orderly arrangement or the pure metal.
·     The layers of metal atoms are prevented from sliding over one another easily. This makes alloys stronger and harder than pure metals. 

Examples of alloy

Alloy
Composition
Steel
99 %   iron     +   1 %  carbon
Stainless steel
74 %   iron  +  18 % chromium  + 8 % nickel
Bronze
90 %   copper   +   10 %  tin
Brass
70 %  copper   +   30 %   zinc
Magnalium
70 %  aluminium   +   30 %   magnesium
Duralumin
95 %  aluminium   +  4 %  copper    + 
1 %   magnesium
Pewter
97 %  tin   +    3 %  lead and antimony
Solder
50 %   tin   +    50 %  lead
cupronickel
25 %  copper    +    75 %  nickel


Wednesday, November 2, 2011

Physics Form 4: Chapter 5 - Convex Mirror Ray Diagrams

 

Ray diagrams are constructed by taking the path of three distinct rays from a point on the object:
X) a ray parallel to the principal axis reflected through F (the principal focus)
Y) a ray passing through C which is then reflected back along its original path
Z) a ray passing through F, which is then reflected parallel to the principal axis

Click on the diagram to play!


Wednesday, October 26, 2011

Negeri Sembilan Prince Supports PAGE

The Malaysianinsider news

KUALA LUMPUR, Oct 25 — Tunku Zain Al-Abidin Tuanku Muhriz showed his support today for the fight to retain the teaching and learning of science and mathematics in English (PPSMI), along with other parents’ groups. Tunku Zain who is the second son of the Yang di-Pertuan Besar of Negri Sembilan, is also the founding president of the Institute for Democracy and Economic Affairs (Ideas), a libertarian think tank dedicated to promoting market-based solutions to public policy challenges.

“This campaign is not about being elitist. It is about respecting the rights of parents, rich or poor, who think that their children’s futures are best served by giving them a say. “It is also not about the superiority of one language over another; rather it is about an overriding democratic principle. The idea that parents can shape the education of their children, and that government policies must always allow as much choice to parents as possible,” he said at a Parent Action Group for Education Malaysia (Page) press conference here at the Tunku Abdul Rahman Memorial.

The prince said he had been warned not to speak on this issue as it is considered sensitive and “too political”.
“I have ignored their advice. This issue is too important, at the cost of short-, medium-, and long-term consequences for our children, for our families and for our nation. Tunku Zain also pointed out that a poll on Facebook showed that more than 6,000 students prefer mathematics and science to be taught in English, while 213 others preferred Malay.

Deputy Prime Minister Tan Sri Muhyiddin Yassin waded into the fierce debate over the use of English in the teaching of science and mathematics in school, saying Malaysians cannot afford to “sacrifice” Bahasa Malaysia for other languages, last month. Muhyiddin, who is also education minister, said that while the government recognised the importance of English as an international language, Bahasa Malaysia will continue to be used as the main medium of instruction in national schools.

He said Malaysians needed to cultivate an attitude where they treated Bahasa Malaysia as a “unique” language, and that if no importance was placed on it, the language risked becoming obsolete.
Pro-English lobby groups like Page have sought the reinstatement of the teaching of science and mathematics in English since it was abolished in 2009. Page has urged that schools be allowed to teach science and mathematics in English, citing widespread support from parents who are in favour of it.
PPSMI was first introduced in 2003 but the Education Ministry decided to put an end to it by 2012 after consulting teachers and parents around the country.

In the uproar that ensued, Putrajaya introduced MBMMBI, which will see the teaching of mathematics and science revert to Bahasa Malaysia from 2012 with more contact hours for English in order to improve students’ skills in the language. In May, The Malaysian Insider reported that the Najib administration had decided not to switch back to PPSMI because several Cabinet ministers felt any change would be seen as another embarrassing flip-flop.

“It is important to have stability in our policies. There have been so many flip-flops in recent times and this is damaging and it is in fact immoral I would say, and economically damaging to let the next generation of Malaysians be the victims of these political games,” the prince said. Tunku Zain said Ideas was inspired by Almarhum Tunku Abdul Rahman Putra Al-Haj and in his time, he said he was a strong advocate of the use of English in education. “He also said education, at whatever level, can make or unmake a man, or a woman. In the same way, it can make or unmake a nation. Our leaders are well aware of it and they make sure their children receive the best education possible.

“In contrast, boys in the kampungs do not have the same opportunities. My job is to give them the best possible education,” he said. Like his older brother, Tunku Zain received his primary education at the Alice Smith School before boarding at Marlborough College in Wiltshire, England.

Physics Form 5: Chapter 5 - Effect of Nuclear Bomb

By using Einstein mass-energy equation, an enormous nuclear energy can be produced within a short time. This is especially true when Albert Einstein himself signed a letter to US President Franklin Roosevelt urging that the nuclear bomb be built to stop the aggression of Nazi and Japanese during the World War II.

Nuclear energy from nuclear bomb 


Let's see how is the effect of nuclear bomb on buildings


In order to end the World War II, we used nuclear bomb!

Click on the diagram below to play!

What are the effects on human?
Target
Hiroshima
Nagasaki
Dead/Missing
70,000-80,000
35,000-40,000
Wounded
70,000
40,000
Total Casualties
140,000-150,000
75,000-80,000
Area Destroyed
4.7 sq mile
1.8 sq mile


Use of nuclear weapons would mean the end of humanity

Saturday, October 22, 2011

Physics Form 4: Chapter 5 - Concave Mirror Ray Diagrams


Ray diagrams are constructed by taking the path of three distinct rays from a point on the object:

X) a ray parallel to the principal axis reflected through F (the principal focus)
Y) a ray passing through C which is then reflected back along its original path
Z) a ray passing through F, which is then reflected parallel to the principal axis

Click on the diagram below to play!

--------------------------------------------------------------------------------------------------
Object's position (S),
focal point (F)
Image Diagram
S < F
(Object between focal point and mirror)
  • Virtual
  • Upright
  • Magnified (larger)
Concavemirror raydiagram F.svg
S = F
(Object at focal point)
  • Reflected rays are parallel and never meet, so no image is formed.
  • In the limit where S approaches F, the image distance approaches infinity, and the image can be either real or virtual and either upright or inverted depending on whether S approaches F from above or below.
Concavemirror raydiagram FE.svg
F < S < 2F
(Object between focus and centre of curvature)
  • Real
  • Inverted (vertically)
  • Magnified (larger)
Concavemirror raydiagram 2FE.svg
S = 2F
(Object at centre of curvature)
  • Real
  • Inverted (vertically)
  • Same size
  • Image formed at centre of curvature
Image-Concavemirror raydiagram 2F F.svg
S > 2F
(Object beyond centre of curvature)
  • Real
  • Inverted (vertically)
  • Reduced (diminished/smaller)
  • As the distance of the object increases, the image asymptotically approaches the focal point
  • In the limit where S approaches infinity, the image size approaches zero as the image approaches F
Concavemirror raydiagram 2F.svg
--------------------------------------------------------------------------------------------------

Chemistry Form 5: Chapter 2 - Hydrogenation


Hydrogenation process is addition reaction to convert alkene becomes alkane. It converts unsaturated compound to saturated compound.

Ethene reacts with H2 at 180 °C in the presence of nickel or platinum catalyst to produce ethane

Click on the diagram below to play!


Application of hydrogenation: Making Margarine

Vegetable oils often contain high proportions of polyunsaturated and mono-unsaturated fats (oils), and as a result are liquids at room temperature. That makes them messy to spread on your bread or toast, and inconvenient for some baking purposes.

You can "harden" (raise the melting point of) the oil by hydrogenating it in the presence of a nickel catalyst. Conditions (like the precise temperature, or the length of time the hydrogen is passed through the oil) are carefully controlled so that some, but not necessarily all, of the carbon-carbon double bonds are hydrogenated. This produces a "partially hydrogenated oil" or "partially hydrogenated fat".



Thursday, October 20, 2011

Physics Form 5: Chapter 5 - Nuclear Chain Reaction

  • If neutrons from the fission of uranium-235 continue to split other nuclei causing further fission, a chain reaction has occurred.
  • A chain reaction refers to a process in which neutrons released in fission produce an additional fission in at least one further nucleus. This nucleus in turn produces neutrons, and the process repeats.
  • The process may be controlled (nuclear power) or uncontrolled (nuclear weapons).
  • In order for a chain reaction to take place, a minimum of one neutron from each fission must trigger further fission.
  • At the same time, the mass of fission material must exceed a certain minimal mass known as the critical mass.
  • A critical mass is the smallest amount of fissile material needed for a sustained nuclear chain reaction. The critical mass of a fissionable material depends upon its nuclear properties (e.g. the nuclear fission cross-section), its density, its shape, its enrichment, its purity, its temperature and its surroundings.
  • If the material is less than this critical mass, too many neutrons escape without hitting any nuclei thus preventing a chain reaction from happening.
Click on the diagram below to play!

Wednesday, October 19, 2011

Good Samaritan Lacks in China

  What do you feel after watching this footage?

China has improved tremendously for the past two decades in terms of economic, military, space exploration, sports, super infrastructures, magnificent skyscrapers, and so on. Despite of these achievements, China is experiencing a drop in moral values among its citizen. I am saddened that China now lacks of good Samaritan. What is so proud about being a superpower nation when its people lacks of showing love to others? Buck up China, rule the world with love. 

I pray that God's love will sweep across the China and brings revival to its people. God loves China.


Animals are better than human. I hope I am wrong.