oh gosh I need help! I have absolutely no idea what to do for my Unit 6 for Biology. It seems like, after searching for hours in the internet, I can only find simple experiments that are not related to A2. Either that or it does not have any good rationale. 
Like an experiment involving different types of mouthwash with different ingredients, I have a good procedure, but no rationale! SOBS.
Any ideas on what can be done in 4 weeks and has a solid rationale. 
Please help me with ideas? 
hey finally some one doing edexcel
well for question 1 u need to know all the practiclas u have done
the practicals are written in the syllabus in bold
learn them
then for question 2 its just calculations and u need to know when to use which type of ghraph
then comes q3 the worst question this is where you have to plan an experiment
make a note of wat is stated in the question always know whether da experiment is in the lab or outside it is stated in the question
do not make a foolproof plan because you will have to give improvements
for eg for growing seeds you can use wet cotton for the experiment and in improvements you can write about using soil
mention the type of sampling you are using along wid the method of collection (transacts or quadrats)
then describe the calculations as well as the test you are gonna do and state wen to use which hypothesis
also draw a table as an example along wid an example graph.
you also need to know some safety precautions and ofcourse u need to describe the plan as well
just know all of this and ull do great
remember there are 2 marks for organisation so plan it in ur head b4 u write so that everything comes in the right order
you also need to remember to write numerical values example length of land shud be about 100m2
then how much of the sample u are taking and how many petri dishes or fields etc
good luck
if you need more help you can always mail me
hopefully i helped
