Final answer:
The Baroque form known for its fast-slow-fast movement pattern is the Concerto Grosso, characterized by the contrast between a small group of instruments and the larger ensemble.
Step-by-step explanation:
The Baroque form that follows the pattern fast-slow-fast is the Concerto Grosso. A concerto grosso is a common form during the Baroque period, which is characterized by a contrast between a small group of instruments, the concertino, and a larger group, the ripieno. The typical movement pattern of a concerto grosso is indeed fast-slow-fast, which can be seen in the works of composers like Vivaldi and Handel. This is opposed to forms such as the fugue, toccata, and sonata, which do not have a prescribed movement pattern of fast-slow-fast.