Bring science to life this February with this engaging Valentine’s Day Heartbeat & Pulse Lab for Grades 2–3! In this interactive human body science activity, students become junior scientists as they explore how the heart works by finding their pulse, measuring their heartbeat, and comparing heart rate before and after movement. Perfect for Valentine’s Day, health lessons, or human body units, this resource combines hands-on learning, observation, and reflection in a simple, student-friend