do you know what a slider is?
you might have seen in some websites a power point presentation like slides moving or fading . A slider widget in wordpress site can easily do that effect. You have to create some slides and have to adjust them for the slider. A website with slider looks very professional. There are many themes which have inbuilt slider(meta slider) which may help you to build a slider. Even with help of some wordpress plugin you can build a slider. If you want to integrate meta slider in your theme read this external article