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Learn how to build a passive solar water heater. A solar heater can be simple to construct and reduce your utility bills. We’ll explore the various types of solar water heaters, and learn to build an easy and affordable model.
Cardboard tube STEM activities for kids to try using cardboard rolls or tubes or even toilet paper rolls. Recycled STEM projects for Earth Day activities too! Cardboard STEM is cheap and easy to set up for classroom STEM activities.