Gantt Charts
The most familiar visual representation of a project schedule is the Gantt Chart. In the Gantt Chart, bars are stretched across a timeline to represent when a task is planned for work. Remember, the fundamental purpose of scheduling is to communicate, and a simple Gantt Chart is an excellent communication tool.

A Simple Gantt Chart:
Here is a Gantt Chart that translates the top level of a WBS into a schedule. Notice the communication value of this simple chart.

An Important Note: The shape of the rectangular bars on a Gantt Chart visually suggest that the level of work is also even across the period of performance. This is simply a visual illusion. The amount of work may or may not be scheduled evenly across the length of the bar.