Temporal Prepositions are the prepositions of time. 
This video deals with the prepositions in, seit, vor, and nach.

While watching the video, you have to consider the following:

• Does the preposition specify a point in time or a duration?
• How do you ask and answer with the preposition?
• What is/are the meaning(s) of the preposition?
• Do you use the preposition with the accusative or dative case?

Watch the video! On the next pages, you can practice the temporal prepositions in, seit, vor and nach.