_:nfc7c648d4803444fa66d50700b102fa5xb11
<http://schema.org/reviewBody>
"The &quot;Energy Tube&quot; is great for helping 4th graders better understand energy. My entire class, connected, hand by hand, can &quot;light up&quot; the &quot;Energy Tube.&quot; Great for teaching open/closed circuits, energy, and more. "
<https://www.teachersource.com/product/energy-tube/>