# Elementary Computation

## Subtraction (Subtraction Facts)

We also subtract all the time, often without thinking about it. Someone has 5 pieces of candy and then someone takes two, "Hey, I only have 3 left!" But, teaching subtraction can be a little trickier than teaching addition.

## Addition (Addition Facts)

We add all the time -- often without even realizing that we're adding. The student who has 2 pencils, grabs another and calls out, "Now I have 3 pencils!" just did mental addition without even thinking about it!

Learning addition is a process. Most people start that process on their fingers (any object will work... but fingers are handy and there are some cool patterns that kids can learn with fingers).

**The most basic form of finger (or object addition) is "counting all."**

*Example*:

$3+5=8$