As I have written before, many students struggle with unit conversions. The Porter Method helps students’ understanding by making the process explicit.
As of the time of writing, GCSE Science (2015 specification) students are expected to know the SI unit prefixes from giga- to nano-.
I suggest the following mnemonic:
Choosing a mnemonic can be difficult because ‘mega’, ‘milli’ and ‘micro’ all begin with m, and even the first two letters of ‘milli’ and ‘micro’ are both ‘mi’. The mnemonic about helps students remember the difference between ‘milli’ and ‘micro’ by using ‘microscopic’ to help.
If you think this approach will be useful for your students, the Powerpoint is attached.
Enjoy!
PS You can find more of my thoughts on the SI system here
e=mc2andallthat 