Liquid Calculator The Hydro Calculator provides a fascinating lesson on renewable resources. email to friend
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This item is discontinued. Sales limited to remaining stock.

The Hydro Calculator provides a fascinating lesson on renewable resources. Instead of running on regular batteries, this calculator is powered by most any liquid. Just pour water, juice, or your favorite beverage into the power cells and you get a fully functional, earth-friendly calculator. Form and function meet in this calculator that is sure to spark interest and conversation! Recommended for ages 8 and up.

What's included?

- 1 Hydro Calculator
- Instructions
- “Fuel” Applicator

How does it work?

The internal converter extracts electrons from the fluid molecules and provides a steady stream of electricity to generate power for the calculator.