●  Preparing Objectives for Programmed Instruction  

Robert F. Mager's classic book on writing objectives. A must read!

●  Arizona State's Interactive Objective Builder   

Designed by James Basore, this tool will help you write your objectives using action verbs aligned with Bloom's Taxonomy.

●  Bloom's Taxonomy of Action Verbs   

A PDF of Bloom's Taxonomy featuring action verbs.