Educational Insights Hot Dots Science Set- Astronomy An independent, self-paced way to practice key science concepts and vocabulary! Set includes 36 double-sided, fully-illustrated cards featuring 72 science questions. Questions cover planets, movements of the moon and earth, the sun, the universe, observing the sky, and history and technology. Use as basic flash cards or add the Hot Dots Talking Pen (not included) for instant reinforcement. Touch the pen to an answer dot for positive reinforcement (correct responses) or gentle redirection (incorrect responses).