Praxis Study Guides - Free OnlinePraxis Study Guides are available for all sections of the Praxis Core exam (Mathematics, Reading, and Writing), as well as for Praxis Elementary Education: Content Knowledge (5018), Praxis Elementary Education: Multiple Subjects (5001-5005), Praxis Middle School Mathematics (5169), Praxis Mathematics: Content Knowledge (5161), Praxis General Science: Content Knowledge (5435), Praxis Educational Leadership (5411), Praxis Special Education (5354/5543) and Praxis Social Studies: Content Knowledge (5081).