The Mineral Encyclopedia Gadget Features 22 experiments that demonstrate

Features 22 experiments that demonstrate key concepts like forces

Wind-up mechanism powers planetary orbits—no batteries needed

Polka-dot fabric-lined interior with zippered pocket for organization

A gyroscope is a device used for measuring or maintaining orientation and angular velocity

This entry-level refractor telescope invites curious explorers to look beyond Earth and begin observing the night sky with clarity and confidence

The Mineral Encyclopedia Gadget Features 22 experiments that demonstrateMineral collecting by amateur "rockhounds" has never been more popular. Old quarries, road cuts, and exposed landscapes are being examined by new generations of minerals enthusiasts. Each needs a comprehensive guidebook with clear photographs and accurate data. This is it. In a thick but handy format, more than 700 different minerals and rocks are grouped by color (for ease of location in the book) blue, red, yellow, brown, green, white and black