What is tallygram and how is it useful in mathematics?

A tallygram is a visual tool used in mathematics to represent data and count occurrences efficiently. It consists of grouped tally marks, often organized in sets of five, making it easier to quickly assess quantities and trends. Tallygrams are useful for teaching counting, basic arithmetic, and data visualization, helping students to understand and analyze numerical information effectively. They also enhance engagement in activities involving data collection and organization.