In this Number Talk, Fran Dickinson engages his 5th and 6th grade students in divining the function from the input and output numbers. As the learners guess input numbers, the educator generates the output number. After each guess he has one of the learners “graph the point."

Taught by: Fran Dickinson, San Carlos Charter Learning Center, San Carlos School District, San Carlos, California

Mathematical Strand:

- Operations & Algebraic Thinking