The present invention relates to a dual-purpose assessment and intervention tool that uses motion capture technology to measure fine motor control through the task of handwriting. The intervention portion of the tool contains various subsections designed to measure fine motor control, including tracing a maze and both tracing and copying a variety of characters. The assessment portion of the tool contains a standard set of exercises designed to provide an overall impression of fine motor control. The assessment portion of the tool generates a numerical score based on pixel-by-pixel accuracy and speed of writing.