# Math Exam Instruction For Studens And Teachers

Students should not include them in portfolios before May 2012. If they are included, they will be subject to a 10-mark penalty. Please note that these dates refer to examination sessions, not when the work is completed. The only tasks produced by the IB that may be submitted for assessment in 2013 are the ones contained in this document. There is a wide range of technological tools available to support mathematical work. These include graphic display calculators, Excel spreadsheets, Geogebra, Autograph, Geometer sketch pad, and WolframAlpha. Many are free downloads from the Internet. Students (and teachers) should be encouraged to explore which ones best support the tasks that are assigned. Teachers are reminded that good technology use should enhance the development of the task. Important information is included in the DPCN, available on the OCC.

If two pieces of work are submitted, but they do not represent a Type I and a Type II task (for example, they are both Types I or both Type II tasks), mark both tasks, one against each Type. For example, if a candidate has submitted two Type I tasks, mark one using the Type I criteria, and the other using the Type II Criteria. Do not apply any further penalty This means that the current system of marking both tasks against the same criteria and then applying a penalty of 10 marks will no longer be used. Consider the five rows of numbers shown below. Describe how to find the numerator of the sixth row. Using technology, plot the relationship between the row number, n, and the numerator in each row. Describe what you notice from your plot and write a general statement to represent this. Describe what you notice and write a general statement to represent this. Comment whether or not this statement is consistent with your earlier statement. Use technology to investigate other values of r and OP. Find the general statement for OP. Test the validity of your general statement by using different values of OP and r. Define suitable variables and discuss any parameters/constraints. Using technology, plot the data points from the table on a graph. Comment on any apparent trends in your graph and suggest suitable models.

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