If you can master a few basic maths skills you've never had before you are guaranteed some extra marks in A level biology! This video is for you biologists you get confused with some of the maths that comes up EVERY YEAR, without fail!
This maths-for-maths-haters tutorial makes the following concepts easy to understand: Percentage increase and decrease, ratios, rates of change and magnification (including understanding units conversion e.g. mm to micrometres). At the end I then go through a couple of exam questions for each of these concepts, showing you how I found the numbers to use from graphs and tables and talking through the working.
As always I time-stamp the video in the first minute so that you can jump to the bits you need -
percentage increase: 01:15
percentage decrease: 04:15
percentage change: 06:00
ratios 07:00
rates 13:00
magnification 20:30
exam question help 30:00
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