Before the Japanese Occupation took place, Singapore was a trading port that provided jobs that allowed people to earn a high income. This can be seen from Source 3 as it states that "back in 1927, Singapore was growing rapidly as a trading port...and immigrants poured in from all over Asia to seek for better living prospects in this foreign land." Working in Singapore before the Japanese Occupation was so profitable, such that foreigners would travel all the way here from the different ends of Asia just to earn a better income. This shows that jobs in Singapore before the Japanese Occupation used to pay a lot more than that of other countries.

Before the Japanese Occupation, as seen from Source 1, students learn English as their main language. We can say that as the owner of this report card is a Chinese girl, studying in an alleged Chinese school, however, the report card does not indicate Chinese as one of the language subject and English was the only language subject tested. Therefore, we can say that students studied English as their main language during the period before the Japanese Occupation. 

During the Japanese Occupation, as seen from Source 2, a Malay student is taught the Japanese language. We can infer that there was a great change in the education system base on the evidence provided before the Japanese Occupation. Before the Japanese Occupation, English is taught as the main language, however during the Japanese Occupation, the Japanese language replaced English as the main language being taught. From this we can say that the education system changed drastically, as the main language being taught had changed to a foreign language that most people did not know how to speak. We can also say that the students also face difficulties learning a whole language which they had never spoken or communicated in before. They also had to adapt to a new education system and that was most likely very difficult for those students.

Conclusion: Therefore,we can say that the Japanese Occupation impacted and changed the school life of the students greatly,since all those students were not given a choice to choose what subjects to learn and were forced to accept and adapt to the new change of the education system.

Before the Japanese Occupation took place, Singapore was a bustling and prosperous trading port that sold a large variety of food such as cakes, fruits, ice creams, satay and many others. This can be seen from Source 7 as it states that "what a necessary part the cake and fruit seller, the ice-cream man, the newspaper boy, the satay seller, the cobbler, the cigarette vendor and the hundred and one other people, who bring their wares to their customer's doors play in the everyday lives of Singapore's citizens." Singapore before the Japanese Occupation was a very busy and popular port with traders and sellers of all kinds of food. The hundred and one other people who brought their wares to their customer's doors in the everyday lives of Singapore's citizens confirms that Singapore was a well-known port and place of food business.
I can also infer that before the Japanese Occupation, hawkers were everywhere. This can be seen from Source 7 as it states that "The Singapore itinerant hawker is an indispensable man to many thousands of people, whatever may be said of his unsanitary methods. To these thousands, the sound of the ice-waterman's tinkle is like sweet music and the sight of him riding along on his tricycle more welcome than a chariot from the heavens." Hawkers in Singapore before the Japanese Occupation would go to teenagers' houses door by door and all the customers need to do is to buy their food. The welcomed sound of the ice-waterman's tinkle is like sweet music confirms that the lives of teenagers, in the aspect of health and food, were very good.

As can be seen in Source 3, the name of the place is in both English and Chinese. And from this we can infer that “Happy world” was meant for the Europeans and Asians, showing that before the Japanese Occupation, there  a mixture of eastern and western recreational activities. And the varying activities provided are also suitable for teenagers. 

During Japanese Occupation, Happy World provides only one recreational activity which is gambling to teenagers. Teenagers are not like mature adults,they cannot control themselves from gambling. They may indulge in gambling easily and cannot get themselves out of it. Gambling may eventually make the families of those teenagers to break up.

Conclusion: Hence, before the Japanese Occupation, there are more choices of recreational activities for the teenagers. And the activities were of a higher quality and  not as harmful to the lives of teenagers as compared to the activities during the Japanese Occupation.

During the Japanese Occupation, people were paid very little, and much lesser than what they had worked for. This can be seen from Source 6, "During the war years, Madam Wong was determined that she and her husband would get at least one meal of rice a day. So she found herself a job as an odd-job laborer, not for the $1 a day she was paid but for the cigarette and tin full of rice she received together with the money." During the Japanese Occupation, people earn incomes that could go even as low as $1. And as stated in the source, the fruits of one's labor was so minimal that it was only enough to get "one meal of rice a day", so poorly paid that it was not enough for one to provide for themselves.

During the Japanese Occupation, teenagers suffered under harsh working conditions and had difficulties coping with food shortages. This can be seen from Source 8, "Everyone was issued with a rational card for collection of rice and sugar. The queue was long and tiring. Food was insufficient to share around." Everyone was issued with a rational card but food was still insufficient. The queue was also very tiring. 
Source 8 also states that "While in the kampong, they grew durian and rambutan trees. She and her cousins would pick up durians in the middle of the night and look out for any thieve around during the ripening season. There was a huge pig style and chicken cop in her kampong where they reared piglets and collect chicken eggs in the morning." This tells me that teenagers had suffered greatly as they had to grow crops and rear animals which required a lot of physical effort but they were still having a lack of food,which might affect their health since they had to starve. Hence,we could say that the lives of the teenagers were very tough.

Conclusion: Before the Japanese Occupation, teenagers were very well nourished with a variety of food. But during the Japanese Occupation, teenagers were to only eat what they could grow and could not buy food from anywhere else and they also did not have enough food to fill themselves. This shows that the Japanese Occupation greatly affected the health and food aspect of the lives of teenagers in Singapore.