iOS for the iPad has always brought with it one or two extra features not found on the iPhone or iPod touch. One of those extra features is the Split Keyboard that can be accessed one of three different methods.
Using the Home Keys
The first way is by placing one finger on each side of the keyboard; preferably by using the “home keys” ([F] and [J]) and slide your fingers outward towards the edges of the screen.
To merge the keyboard place one finger on each of the “home keys” again and slide your fingers towards the center of the screen.
Using the Keyboard Key
The second way is by placing a finger on the Keyboard key (in the lower right corner of the keyboard) and slide it towards the top of the screen.
To merge the keyboard place your finger back on the Keyboard key and slide it to the bottom of the screen.
Using the Keyboard Key with Tap and Hold
The third way is to tap and hold the Keyboard key then slide your finger to the Split option.
To merge the keyboard, tap and hold the Keyboard key and slide your finger to the Merge option.
In each instance once the keyboard is undocked you can use the Keyboard key to move the keyboard up and down the screen.
To dock the keyboard at any time you can either slide it to the bottom of the screen with the Keyboard key or tap and hold the Keyboard key, then slide your finger to the Dock or Dock and Merge option.
NOTE: If the keyboard is left undocked and you switch applications the keyboard will reappear in the same place it was left in from the previous application.