Good on size of different animals
More about perimeter volume area - 3rd grade
Easy to remember
C=centigrade and F= Fahrenheit
In alphabets C is smaller to F (F is higher alphabet)
In other words C is small so it should add 32 to equal to F and also the higher 9 should be on top for C
°F = °C x 9/5 + 32
In other words F is higher so it should subract -32 to equal to C and also the lower 9 5 should be on top
°C = (°F - 32) x 5/9
Nobel prize talk on Avogadros number
http://blogs.mtu.edu/teacher-institute/files/2014/01/id61.pdf
