5 Tips to Avoid Careless Mistakes for Maths (Tip #2): Know Your Tendencies
Having tutored many students over the years, and helping them to prepare for their GCE O-level Mathematics and Additional Mathematics exams in Singapore, I can’t help but notice certain patterns of occurrences, i.e. that everyone (myself included) has a tendency or inclination to make a specific type or types of CSMs (Careless Stupid Mistakes).
For example, some students tend to make what I call copy or transfer errors, i.e. they copy down the question wrongly, miss out a variable or index here and there, or transfer a sign wrongly from one step to the next. Others tend to make simple operational errors like adding instead of multiplying and the list goes on. The point is – it’s likely that you will be more prone to making a specific type of CSM, and honestly sometimes all that is needed is a conscious effort and think “Aha! I’ve made a CSM doing this before, I better be more careful this time round.”
But of course, this only works if you are first aware of your own tendencies. In my maths tuition classes, I’ve developed specific exercises to help hasten this process of self-awareness. It’s not rocket science. It’s just a comprehensive collection of typical GCE O-Level maths questions intentionally littered with the most common CSMs. The goal of the exercise is to spot the CSM and make the correction. It’s a simple yet effective way to discover and weed out common CSMs in a more proactive manner.