Dear Yr 11,
I hope you enjoyed the first paper and are now working really hard for the next one!
Here are some predictions of what is likely to come up in the next exam.
Please note that this list is just a guess and that is all so don’t bank on it being accurate. It is just to help.
o Trial and improvement – learn what to do at the end of your answer
o Estimation – remember to round to 1 significant figure
o Nth term eg 4, 7, 10, 13 is not n + 3 but it actually is 3n+1. And once you’ve found the formula know how to use it.
o Finding an estimate for the mean from a frequency table or a grouped frequency table – remember to use the guess in the middle of the group and to divide by how many results there are and not how many rows in the table.
o A proportion question – read the question properly. Read it three times to be sure.
o A bounds question – work out UB and LB of the numbers before doing any calculations.
o Area, circumference etc calculations on circles. – get the formulae right
o Trigonometry – either SOHCAHTOA or sine rule/cosine rule or both
o Pythagoras’ theorem. Eg finding the distance between two points or maybe 3-D Pythagoras.
o Repeated percentage increase or decrease – like interest on bank accounts or a car depreciating in value. Remember that the value changes each year – you need to take account of this.
o Algebraic proof – remember to establish a start point, develop the argument by rearranging the algebra, reach the conclusion required by the question AND give explanation!
o Quadratic equations – I think that as it is a calc paper you will need to use the formula
o Ratios – wasn’t anything on the first paper – I guess it will be there on the second on.
These other topics might come up on the exam but i don’t think they are as likely.
o Finding the equation of a straight line – might use parallel and/or perpendicular lines
o Surds – simplification and rationalise the denominator
o Solving a quadratic equation by using the formula for quadratics. Remember it’s given to you on the paper. Practise, practise, practise! Be careful with the negatives.
o A congruent triangles question – learn the criteria for congruency such as ASA, SSS, SAS, RHS.
o Other statistics diagrams such as pie charts or frequency polygons.
o Volume and surface area of solids like cone/pyramid.