The 5E model is an instructional model for constructivism developed by the Biological Science Curriculum Study. It consists of five stages for teaching and learning: Engage, Explore, Explain, Elaborate, and Evaluate. The Engage stage piques student interest and assesses prior knowledge. The Explore stage allows students to build understanding through involvement in the topic. The Explain stage communicates what students have learned and what it means. The Elaborate stage extends student knowledge through continued exploration. The Evaluate stage determines student and teacher understanding of learning that has taken place.