I made this for my high school Spanish 1 students to practice saying the date and time in Spanish, but it is completely editable so you can customize the material for your subject.
Each slide features 5 text boxes that appear one at a time when you click the mouse. A red stop light appears with the text box and remains on the screen for a wait time of 4 seconds. This gives students time to think--no one may answer or even raise their hand until the green light appears. After 4 seconds the green light appears and there is also a laser sound effect to let students know it's OK to answer.
Click the mouse to go to the next text box. There is a 2 second delay just to provide students with a chance to clear their minds.
This PPT has 8 slides set up in this format, but you could add as many as you want (without having to add the animation!) by simply using the "duplicate slide" feature.
Specifics of the Spanish Date & Time PPT: 5 slides of date practice (25 total dates) and 3 slides of time practice (15 total times). This provides ample opportunity to make sure everyone in the class says at least one.
I've done the hard work for you, now go make it yours! Add fonts, clip art, etc. and use this template over and over again!