This time around i am exited to teach linear equation. Linear equation is an essential an super duper important for students to master as it will be use in solving almost all mathematical problems. Normally students will have problems in choosing which sign to be removed first. Previously, i teached this topic using 'magic bridge' where students will 'pindahkan' sign and it change. But i realized that method somehow make students confused when it comes to fraction.
Flag Method, or Arrow method will help students to identify what is happening to the unknown, x actually. Students can do a story telling, for example
Hi, I am X. Firstly I had been multiplied by 2, then subtracted by 8 which equal to negative 2.
Who am I?"
Students might feel tedious to draw the flags over and over again. But its OK, let them do it so they know and have a feeling about the algebraic expression.
Then students will do the reverse process to find x. Students first need to know the pair operation,
1. addition vs subtraction
2. Multiplication vs division
3. root of vs power of
Then they will draw the flag reversely and finally find x. yeay :)
However, this method alone won't contribute any marks in Malaysia examination system. Hence then I asked the students to do the balancing method based on the flag method they just did.
p/s: Flag method only works when you have the unknown in one side only. Not both. When you have the unknown on both sides, you have to use the balancing method. since students already comfortable and understood the expression, they know what to be removed first.
Students happy, Teacher double happy :)