![A Magic Classroom: Nail Balance Puzzle [Pdf] Activity](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "A Magic Classroom: Nail Balance Puzzle [Pdf] Activity")
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A Magic Classroom: Nail Balance Puzzle [Pdf]
In this lesson, students try to balance fourteen nails on the head of one nail by outwitting gravity.
University of Colorado
University of Colorado: Ph Et Interactive Simulations: Under Pressure
Students studying pressure will better understand its concepts with this virtual experiment that tests how pressure changes in air and water as the fluids, gravity, container shape, and volume changes.
Science Museum, London
Science Museum: 360 Periscope
Make a 360 degrees periscope which uses mirrors to reflect light to see around corners.
Other
American Coal Foundation: Lesson Plan: How Was Coal Formed?
Two-part instructional activity in which students learn about when and how coal was formed. They will do research on geologic time frames and order them by eon, era, period, or epoch.