A growth chart is a visual tool used to track the growth and development of children over time. It typically displays measurements such as height, weight, and head circumference against age. These charts help healthcare providers assess whether a child's growth is on track compared to established norms for their age and sex. Growth charts are based on data collected from large populations, often represented by percentiles. For example, a child in the 50th percentile for height is taller than 50% of children their age. Regularly monitoring growth using these charts can help identify potential health issues early, ensuring timely intervention if needed.