Build your own hand-crank flashlight and watch energy transform right in your hands! Crank the handle to convert mechanical energy into electrical energy — powering the LED light with no batteries required. A brilliant demonstration of energy transformation that kids can build and actually use.
Build a real working hand-crank flashlight from scratch
No batteries needed — mechanical energy powers the LED light
Learn energy transformation (mechanical → electrical) hands-on
Fully functional when complete — a useful tool and a STEM lesson in one
All parts and easy-to-follow instructions included — ages 8 and up
