What is this thing, this periodic table? It's a crucial part of chemistry, and millions of students encounter this fine and elegant visualization of substances every year. Professor Norman Herr has created this helpful trove of resources and links that can be used by both teachers and students. The items here are divided into four sections: Online Periodic Tables, Tables for Printing, Periodic Table Powerpoint Presentations, and Classroom and Laboratory Activities to Build Understanding of the Periodic Table. The first section here offers five great dynamic versions of the periodic table, complete with helpful links to outside resources and related materials. Also, the Classroom and Laboratory Activities area includes two fun activities, one presents the colors of the periodic table and the other is a chapter from the book “Hands-on Chemistry.”