University of Texas at Austin
Ut Austin: Introduction to French Prepositions
Brief intro to French Prepositions - Compares to English to highlight differences (with examples).
Other
City College, San Francisco: French Online Grammar Quiz
Series of interactive online grammar quizzes divided into 12 chapters (intended to accompany text "Allons-y" but text not necessary). Each chapter is divided into various concepts and provides a short, self-correcting test - several in...
University of Texas at Austin
University of Texas: Francais Interactif
This full-featured interactive textbook encounter utilizes French speakers in real life scenarios. Well structured for work on grammatical concepts (links to Tex's French Grammar), vocabulary, listening comprehension and exposure to...
University of Texas at Austin
Tex's French Grammar: Contractions of a and De
This lesson from Tex's French Grammar is a wonderful site with clear explanation of forming conntractions with the prepositions "a" and "de", with written and audio usage examples and interactive practice exercises.
University of Texas at Austin
Tex's French Grammar: Prepositions With Places
Tex's French Grammar clarifies the usage of prepositions (a, de, d', du, des, au, en, aux) with regard to geographic locations--and gives usage examples and interactive practice exercises (written and audio).
Other
Les Jeux D'orthonet: Interactive French Grammar Exercises
These multilevel French grammar interactive exercises concentrate on agreement of past participles and the like.