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.
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.
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.
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.