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Friday p3 higher
Transcript of Friday p3 higher
CALCULATE
PAPER 1 Its all done now, don’t dwell on it too
much or celebrate yet.
PAPER 2… 50% more marks 33% more time
So
Therefore it is crucial in determining your final
grade. Can still assess content that was in paper 1!
TO HELP OVER HALF TERM… Twitter @MAKErevision
Instagram- MAKErevision
Blog- MAKErevision.blogspot.co.uk
This powerpoint will be available on the blog.
TWITTER @MAKEREVISION Poll questions
Ask for help via @MAKErevision
Retweets of corbettmaths and other useful resources
Instagram posts are tweeted.
INSTAGRAM MAKEREVISION Daily questions Higher, Foundation
and Further Maths. Respond to
questions. Ask for help on
questions. Request questions
MAKEREVISION.BLOGSPOT..CO.UK Useful videos
Exam style questions
Links to useful documents and resources.
MAKEREVISION.BLOGSPOT..CO.UK Useful videos
Exam style questions
Links to useful documents and resources.
TODAYWe are going to look through some examples which are typical calculator problems.
There is no guarantee that these topics will come up on paper 2. (Unlike Marty McFly we cannot travel to the future!)
Other topics will come up that do not appear in this list- so revise EVERYTHING!
TIPS FOR OVER HALF TERMRevise EVERYTHING!
Use corbettmaths Complete the 5 a daysFollow Twitter and Instagram and respond to the posts.
Remember this is a calculator paper- so you can use you calculator for every question!
AVERAGES AND DATA HANDLING Higher Tier data handling is more likely to be
based on grouped and/or continuous data
Cumulative Frequency, LQ, median, UQ etc along with boxplots are common questions
AVERAGES - SKILLS
AVERAGES – EXAM QUESTION
ERROR BOUNDS Rounding to significant figures and decimal
places means that there is potential variation in the actual value
eg 1500 to 2sf could be anything between 1550 and 1450
A possible method to ensure you have the upper or lower bound of a calculation is to quickly calculate all the possible options (in a systematic way) and then identify the highest/lowest values
ERROR BOUNDS
ERROR BOUNDS
REVERSE PERCENTAGES Reverse percentages are the questions that
ask what the ORIGINAL price was before a sale/discount etc
The key is to think about the calculation that would have been done to achieve the value and then undo it.
Decimal multipliers are the only effective way of consistently getting this right!
REVERSE PERCENTAGES Something that has been reduced by 25%
would have been multiplied by 0.75
So to get the original just divide by 0.75
REVERSE PERCENTAGES
TRIAL AND IMPROVEMENT Trial and improvement should only be used
on questions that mention it specifically
More than any other question, the majority of the marks are for your working out, not you final answer
Remember to give you answer to the right level of precision as given in the question.
TRIAL AND IMPROVEMENT Layout is important!
TRIAL AND IMPROVEMENT Substitute in whole numbers (in this
example). If the answer is smaller than you want use a
larger value Decide (and state) which values x must be
between
TRIAL AND IMPROVEMENT
TRIGONOMETRY
Soh Cah Toa – Only for right-angled triangles.
Sine or Cosine Rule – Formulae given on the first page of your exam.
SOH CAH TOA
Remember to label the sides of the triangle using o (opposite), a (adjacent) and h (hypotenuse).
SOH CAH TOA
SINE/COSINE RULE
SINE/COSINE RULE
SINE/COSINE RULE
DIRECT AND INVERSE PROPORTION
Direct proportion – y is directly proportional to x ( y α x ) means y = kx You must calculate the constant of
proportionality k by using the values of x and y given in the question
( y α x2 ) means y = kx2 or ( y α √x ) means y = k√x
Inverse proportion – y is indirectly proportional to x (
DIRECT AND INVERSE PROPORTION
PROBABILITY TREES Remember to read the question carefully.
Does it mention replacement? Are the events independent?
To calculate probabilities of events, you must multiply along the paths of the tree.
You may then also need to add separate outcomes together.
PROBABILITY TREES