Building Blanket Forts with the Science of Tension

SciShow Kids

In this engaging episode of SciShow Kids, host Jessi and her robot friend Squeaks explore the physics behind a favorite childhood pastime: building blanket forts. The video transforms a fun rainy-day activity into an introductory engineering lesson by explaining how structures stay standing. Jessi demonstrates two specific methods for constructing forts—the basic draped sheet and the 'tent' style using a string—while explaining the scientific principles that make them work. The content focuses heavily on physical science concepts, specifically the idea of 'forces' (pushes and pulls) and 'tension' (a pulling force). The video draws a clear parallel between the mechanics of a blanket fort and the engineering of massive suspension bridges, showing students that the same physical laws apply to both. It introduces key vocabulary like 'tension,' 'anchors,' and 'engineers' in a highly accessible context. For educators, this video serves as an excellent hook for STEM challenges and physical science units. It provides a concrete, low-stakes environment for students to experiment with forces. Teachers can use this video to launch a classroom engineering design challenge where students must plan, build, and test structures, applying the concept of tension to create stability. It validates play as a form of scientific experimentation.