Discover the history, structure, and importance of the periodic table of elements, from Mendeleev’s discovery to modern scientific applications. When you purchase through links on our site, we may ...

Editor's note: The following is a text-only version. The complete version with artwork is available for purchase here (PDF). The periodic table of the elements is one of the most powerful icons in ...

How to create one table of contents from multiple documents Your email has been sent I is possible to create a single table of contents for multiple Word documents, it just requires an extra step or ...

How to add an appendix to a table of contents in Microsoft Word Your email has been sent An appendix should probably be included in a document’s table of contents. In Microsoft Word, if you use the ...

Every field of science has its favorite anniversary. For physics, it’s Newton’s Principia of 1687, the book that introduced the laws of motion and gravity. Biology celebrates Darwin’s On the Origin of ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

No matter how great your idea is, the difference between your business proposal and someone else’s could boil down to the look and feel. A title page, header and footer, table of contents, and other ...