DIDIM Mini is an AR-based physical education platform for children ages 3–5. It combines Move, Think, and Play into interactive activities that build healthy habits while keeping learning fun. Developed with input from early childhood and PE experts, it tackles the decline in activity among young children caused by smartphones and tablets. Kids run, jump, and complete missions on an AR screen projected onto the floor, improving coordination, problem-solving, and social skills through active play. Unlike passive screen time, DIDIM Mini creates immersive, hands-on learning. A high-precision LiDAR sensor detects movement in 0.06 seconds, ensuring instant feedback with no lag. Its portable, installation-free design with safe, curved edges fits easily into classrooms and daycares. Teachers can launch lessons immediately, and children stay equally engaged anywhere. DIDIM Mini promotes holistic growth—self-expression, cooperation, and rule-following—helping educators achieve long-term outcomes efficiently.