When instructional designers are approached to create instructional materials, their first challenge is to determine the intention of instruction. Designers must analyze instructional goals to create clear and explicitly stated objectives for learners. This helps to determine successful outcomes. Evaluating learning goals using Bloom's taxonomy allows designers to determine the level of cognitive skill required by the learner prior to instruction as well as the cognitive skills that need to be acquired by the learner during instruction. This creates constructive environments for positive learning outcomes.