Three-phase lesson format is a problem-solving structure to promote meaningful math learning by activating prior knowledge, letting students explore mathematical thinking, and promoting a math community of learners. The three elements of this format are: 1) before phase or launch: getting ready, 2) during phase or explore: students work, and 3) after phase or summarize: class discussion.

Watch how this first grade teacher uses the three-phase lesson format to teach Operations and Language Skills. Through this problem-solving approach, students persevere to advance their mathematical thinking and Mathematical Flexibility.

Numeracy and Mathematics

Arithmetic Fact Retrieval

Estimation

Mathematical Flexibility

Operations

Place Value