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    As part of my bridging work in chemistry I need to research the experiments carried out by six scientists', the results they obtained, and the conclusions made by that scientist. I need to reference all my work, but does it matter if I only use internet sources? I don't think this unit is related to the Practical Endorsement but I've been told to use a range of references by my A-level teachers, only problem is, the first book I looked at, for J.J. Thomson (a biography) costs £145.00 to buy? I'm on the OCR Salters exam board.

    For biology, I need to research and explain the works of seven scientists and explain how they contributed to biology. This IS part of the Practical Endorsement so I do want to get it right the first time. Once again I need to reference my work, but surely it isn't enough just to use online references? What can I do? I'm on Edexcel exam board for this subject.

    I did the chemistry one last year, and If I remember correctly it does count towards the PAG. However you definitely do not need to buy that book or any book in fact, the internet is fine. Just make sure you reference properly and they will pass you. Whatever you do, do not buy any books before you start 6th form. I wasn't on edexcel for biology so I'm not familiar with the task, however again you will not need to buy anything just use the internet and if necessary use library books. The main thing with the practical endorsement is to make sure you have done and understand the tasks, and also the theory behind them. You either pass or fail and as far as I'm aware the only way to fail is to leave practical's incomplete or done to a very poor standard.
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