Ask your students "Tell me how many you see?" " How do you see that many?" Listen and record their thinking.
Number Talks are 5 to 15 minute opportunities to developing efficient, flexible, and accurate computational strategies that build upon the key fundamental ideas of mathematics such as composition and decomposition of numbers, our system of tens, and the application of properties. Classroom conversations and discussions around purposefully crafted computation problems are at the very core of Number Talks. These are opportunities for the class to come together to share their mathematical thinking. By sharing and defending their solutions and strategies, students are provided with opportunities to collectively reason about numbers while building connections to key conceptual ideas in mathematics.