This is a start to a series of activities that will have the look of a whiteboard and dry erase markers. I have programmed the activity to allow students to visualize where to look on a number line when directed "before" or "after". It also reinforces their understanding of left versus right. This activity can be done at the smart-board or on a computer. They are given a number prompt, then they press the arrows to find the correct number and press that number. It has a correct sound and a wrong sound. Need 5 points to win!