Controlled Assessment Unit - CAU Investigative Skills Assessment - ISA 7 ISA section 2 exam – Additional / Separate Science Section 2 Exam: Up to 50 minutes is allowed for this. The test may be taken in the normal teaching room, provided that you can be accommodated in such a way as to prevent any copying or unauthorised collaboration. However the test will usually take place in the hall, dance studio or drama studio depending on their availability. If you normally have a reader, extra time, scribe etc. for exams then you will have the same arrangements made for the ISA exam. Section 1 of the ISA will contain questions concerning conclusions and evaluation and is worth 30 marks of the overall 50 allocated to the Controlled Assessment. You may use your Candidate Research notes sheet, which you filled in during your research. You will also be given a data sheet with 4 case studies. Section 2 Exam: There are normally 4 questions, some of these questions are made up of more than one part: 1.Analyse and evaluate your results a)Do your results support your hypothesis? b)- e) These questions are on a variety of topics and may vary in number from ISA to ISA 2.Analyse and evaluate the data given in the case studies a)Sketch graph b)Explain whether or not the results on the Secondary data sheet support the given hypothesis c)Analysis of Case Study 4 This is only a guide there may be more questions based on the case studies 3.How could the results from your investigation be useful in the context that you have researched? 3 marks 4.Submit the graph or bar chart you have drawn of your results 4 marks

Controlled Assessment Unit - CAU Investigative Skills Assessment - ISA You may also be asked a question similar to this in the section 2 exam Do your results support the hypothesis that you investigated? You should use any pattern that you can see in you results to support your answer. You should include examples from your results 3 marks 7 ISA section 2 exam – Additional / Separate Science MarksGuidance 0No credit worthy response 1 A simple correct statement is made as to whether or not the results support the hypothesis with an attempt at an explanation 2 A simple correct statement is made as to whether or not the results support the hypothesis and an explanation that includes a simple description of a correctly identified pattern or lack of pattern 3 A simple correct statement is made as to whether or not the results support the hypothesis and an explanation that includes a detailed description of a correctly identified pattern or lack of pattern. Hypothesis: A proposal intended to explain certain facts or observations Explain: You should make something clear, or state the reasons for something happening. The points in the answer must be linked coherently and logically. The answer should not be a simple list of reasons.

Controlled Assessment Unit - CAU Investigative Skills Assessment - ISA 7 ISA section 2 exam – Additional / Separate Science An example of a good answer

Controlled Assessment Unit - CAU Investigative Skills Assessment - ISA Anomalous: A result that does not fit into a common, familiar, or expected type or pattern You may be asked a question similar to this in the section 2 exam: Did you get any anomalous results? Explain your answer. Your explanation should include examples from your results. 3 marks 7 ISA section 2 exam – Additional / Separate Science Explain: You should make something clear, or state the reasons for something happening. The points in the answer must be linked coherently and logically. The answer should not be a simple list of reasons. MarksGuidance 0 No credit worthy response 1 There is a correct statement as to whether or not there are any anomalous results 2 There is a correct statement as to whether or not there are any anomalous results and a statement or implication that anomalous results are ones that do not fit the pattern. 3 Some examples from the results are given to support this, eg by specifying results that are considered to be anomalous or by referring to the fact that, eg all results are very close to a line of best fit.

Controlled Assessment Unit - CAU Investigative Skills Assessment - ISA 7 ISA section 2 exam – Additional / Separate Science An example of a good answer

Controlled Assessment Unit - CAU Investigative Skills Assessment - ISA You may be asked a question similar to this in the section 2 exam: Describe in detail how you could use repeated readings to obtain more accurate results. 3 marks 7 ISA section 2 exam – Additional / Separate Science Repeatable: A measurement is repeatable if the original experimenter repeats the investigation using the same method and obtains the same results. Explain: You should recall some facts, events or process in an accurate way - for example an experiment you have done. You may need to give an account of what something looked like, or what happened, eg a trend in some data. Accuracy: A measurement result is considered accurate if it is judged to be close to the true value. MarksGuidance 0No credit worthy response 1A statement is made that a mean should be calculated. 2 A statement is made that a mean should be calculated by adding the results together and dividing by the number of values. 3 A statement is made that a mean should be calculated, by adding the results together and dividing by the number of values. A statement is made that either anomalous results are discarded before calculating a mean or a graph is plotted and a best fit line is drawn ignoring anomalous points

Controlled Assessment Unit - CAU Investigative Skills Assessment - ISA 7 ISA section 2 exam – Additional / Separate Science An example of a good answer

Controlled Assessment Unit - CAU Investigative Skills Assessment - ISA Range: The maximum and minimum values of the independent or dependent variables; important in ensuring that any pattern is detected. You may be asked a question similar to this in the section 2 exam: What was the independent variable in the investigation that you did? What was the range of the independent variable? The range was from ……… to ……… Explain why this was or was not a suitable range. 3 marks 7 ISA section 2 exam – Science A MarksGuidance 0 No credit worthy response 1 At least one end of the range is correctly stated Another value of the independent variable is suggested, although it may not be appropriate 2 The range is correctly stated, according to the candidate’s own results Another appropriate value of the independent variable is suggested The reason for the additional value is unclear or inappropriate 3 The range is correctly stated, according to the candidate’s own results Another appropriate value of the independent variable is suggested The reason for the additional value is clear and appropriate Explain: You should make something clear, or state the reasons for something happening. The points in the answer must be linked coherently and logically. The answer should not be a simple list of reasons.

Controlled Assessment Unit - CAU Investigative Skills Assessment - ISA 7 ISA section 2 exam – Additional / Separate Science An example of a poor answer

Controlled Assessment Unit - CAU Investigative Skills Assessment - ISA Resolution: This is the smallest change in quantity being measured (input) of a measuring instrument that gives a perceptible change in the reading. You may be asked a question similar to this in the section 2 exam: Resolution refers to the smallest scale division of a measuring instrument. What was the resolution of the device that you used to measure the timing of the reaction? Do you think that this resolution was appropriate for this measurement? Explain your answer. 3 marks 7 ISA section 2 exam – Additional / Separate Science Explain: You should make something clear, or state the reasons for something happening. The points in the answer must be linked coherently and logically. The answer should not be a simple list of reasons. MarksGuidance 0 No credit worthy response 1 A correct value for the resolution is given OR A sensible but incorrect value is given for the resolution, with a correct statement appropriate to the resolution they have given. 2 A correct value for the resolution is given AND A correct statement as to whether or not the resolution was appropriate is given, but the explanation is not clear 3 A correct value for the resolution is given AND A correct statement as to whether or not the resolution was appropriate is given with a clear explanation

Controlled Assessment Unit - CAU Investigative Skills Assessment - ISA 7 ISA section 2 exam – Additional / Separate Science An example of a good answer

Controlled Assessment Unit - CAU Investigative Skills Assessment - ISA You may be asked a question similar to this in the section 2 exam: You have been given a Secondary Data Sheet that provides results from similar investigations. Draw a sketch graph of the results in Case Study 1. 3 marks 7 ISA section 2 exam – Additional / Separate Science Sketch graph: A line graph, not necessarily on a grid, that shows the general shape of the relationship between two variables. It will not have any points plotted and although the axes should be labelled they may not be scaled. Explain: You should make something clear, or state the reasons for something happening. The points in the answer must be linked coherently and logically. The answer should not be a simple list of reasons. MarksGuidance 0No credit worthy response 1Both axes labelled with the variables and units 2 Both axes labelled with the variables and units and an appropriate line drawn

Controlled Assessment Unit - CAU Investigative Skills Assessment - ISA 7 ISA section 2 exam – Additional / Separate Science An example of a good answer

Controlled Assessment Unit - CAU Investigative Skills Assessment - ISA You may also be asked a question similar to this in the section 2 exam X investigates the following hypothesis … Explain whether or not the results in Case Studies 1, 2 and 3 support this hypothesis. To gain full marks your explanation should include appropriate examples from the results in Case studies 1, 2 and 3. 3 marks 7 ISA section 2 exam – Additional / Separate Science MarksGuidance 0No credit worthy response 1 A simple correct statement is made about at least two of the Case Studies 1, 2 and 3, as to whether or not they support the hypothesis. 2 Correct statements are made Case Studies 1, 2 and 3, supported by a more detailed explanation of one of them. 3 Correct statements are made Case Studies 1, 2 and 3, supported by a more detailed explanation of both Case Studies 2 and 3. Hypothesis: A proposal intended to explain certain facts or observations Explain: You should make something clear, or state the reasons for something happening. The points in the answer must be linked coherently and logically. The answer should not be a simple list of reasons.

Controlled Assessment Unit - CAU Investigative Skills Assessment - ISA 7 ISA section 2 exam – Additional / Separate Science An example of a good answer

Controlled Assessment Unit - CAU Investigative Skills Assessment - ISA 7 ISA section 2 exam – Additional / Separate Science An example of a good answer

Controlled Assessment Unit - CAU Investigative Skills Assessment - ISA Context: Your teacher will describe the context in which the investigation is set. Relating the investigation to the context Your teacher will describe the context in which the investigation is set. You must research this context and write down how the results of your investigation might be useful, e.g. health and safety developments, energy efficiency, in industry, etc. 7 ISA section 2 exam – Additional / Separate Science You may be asked a question similar to this in the section 2 exam: How could the results from your investigation be useful in the context that you have researched? You may use information from your Candidate Research Notes to help you to answer this question. 3 marks MarksGuidance 0No credit worthy response 1 An idea from the research has been related to the context 2 An idea from the research has been related to the context and there is a simple explanation of how the idea can be applied and used in the given context 3 An idea from the research has been related to the context and there is a detailed explanation of how this idea can be applied in the given context

Controlled Assessment Unit - CAU Investigative Skills Assessment - ISA 7 ISA section 2 exam – Additional / Separate Science An example of a good answer An example of a poor answer