A Binary Tree Breadth First Traversal also known as Level Order Binary Tree Traversal is a method of visiting all the nodes of a binary tree level by level, from left to right.

Pseudo Code Flow Representation
START
Function printLevelOrder():
If root is NULL:
Return
Create Queue
Add root to Queue
While Queue is not empty:
Remove node from Queue
Print node.data
If left child exists:
Add to Queue
If right child exists:
Add to Queue
END