Learning the Multiplication Tables

In a previous post, I tried to show that learning the multiplication tables need not be daunting for children (or even adults). Here are a few odd methods and techniques that might also help.

Colour Mixing

There seems to be some confusion about what the primary and secondary colours are. Well, it depends.

Dimensional Analysis of the Kinematic Equations

To help to remember the kinematic equations, it may be useful to know a little dimensional analysis.

Planetary Mnemonic

Here’s something I noticed that might help people to remember the order of some of the planets – mainly the gas giants.

Beyond Mars are:

• Jupiter
• Saturn
• Uranus
• Neptune

notice the initial letters in the order SUN away from the Sun.

Dimensional Analysis of Statistical Formulae

Dimensional analysis (also used in Physics) can be used to check statistical formulae.

Trigonometric Mnemonic

At school we had a saying with which to remember the trigonometric forms:

• 
• , and
• 

in a right-angled triangle, where

• is one of the other angles
• is the short side opposite the angle
• is the short side adjacent to the angle, and
• is the hypotenuse (the long side).

The saying was

Some Old Horses
Can Always Hear
Their Owners Approach.

Possessive Apostrophes

There’s a very easy rule for using apostrophes to indicate possession.