A tree diagram in math is a tool that helps calculate the number of possible outcomes of a problem and cites those potential outcomes in an organized way.

Tree diagrams are a way of showing combinations of two or more events. Each branch is labelled at the end with its outcome and the probability is written alongside the line.

Article citations More>> Aspinwall, L., & Shaw, K. L. (2000). Enriching students’ matematical intuitions with probability games and tree diagrams. Mathematics Teaching in the Middle School, 6, 214-220 ...