Adding interactive quizzes to your micro-courses with Zendeck is the fastest way to lift learner engagement and knowledge retention, and this guide shows you exactly how. You get a step-by-step walkthrough of Zendeck's often-overlooked interactivity features: embedding quizzes and polls directly into your course flow, writing instant feedback that teaches, and placing checkpoints so learners stay present instead of clicking through passively. We cover the evidence that interactive micro-learning improves completion and retention, a comparison of quiz formats, best practices for making quizzes feel like a game rather than a test, and a realistic 30–45 minute workflow to retrofit your existing course. Whether you're an educator, corporate trainer, or L&D lead, this practical guide turns a one-way deck into a two-way conversation that learners actually finish and remember.