The Ball Drop Test is a self-contained Montessori science activity designed for upper elementary (grades 4–6) students to investigate how gravity affects falling objects. This engaging work allows students to measure and compare the time it takes for a ball to drop from different heights and to understand acceleration due to gravity. Students will: Drop a ping pong ball from three different heights (0.5 m, 1.0 m, and 1.5 m) Use a stopwatch to measure drop time for each height Repeat trials,