A Delhi-based primary school teacher, Sapna, has captured social media attention through a unique classroom activity video she posted on Instagram. The video, which has amassed over 16 million views, demonstrates the arm span-to-height ratio, a concept that connects human anatomy with real-life examples for her young students.
View this post on Instagram
In the clip, Sapna engages her students by asking one of them to step forward as she positions her bent arm toward the floor and stretches her other hand to the blackboard. She then instructs the student to mark the point where her extended hand touches the board. By standing straight afterward, she shows that her height aligns with the mark, illustrating the one-to-one arm span-to-height ratio in a simple and effective way.
The demonstration not only amazed the students but also charmed viewers online, with many praising her engaging teaching approach. One user commented, “Enlightening,” while another noted, “This was already mentioned by Acharya Charak.” Ancient Ayurvedic scholar Acharya Charak documented similar observations on human proportions centuries ago.
Through this creative demonstration, Sapna revived an ancient concept in a way that was easy for her young students to grasp and left viewers on social media deeply appreciative.
