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Activity
Other

National Museum of Women in the Arts: How to Make a Tunnel Book

For Students Pre-K - 1st
Simple instructions on how to create your own tunnel book. These fun books create the illusion of depth and would be great for book report projects.
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Activity
University of Cambridge

University of Cambridge: Nrich: More Christmas Boxes

For Students 3rd - 8th Standards
Sharpen your logic and spatial reasoning skills while working on this challenge. Solution available.
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Website
Ducksters

Ducksters: Geography for Kids: Top 10 Lakes by Area and Depth

For Students 9th - 10th
Students learn about the geography of the world's lakes and top 10 lakes listed by area size and depth on this website.
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Handout
Wolfram Research

Wolfram Mathworld: General Solid Geometry

For Students 9th - 10th Standards
This page has links to general solid geometry topics, including depth, height, width, and length. A good introductory site into geometry.