How do you get a theorem named after you? Euler knows what it takes! The third lesson of five asks pupils to use an interactive activity to compare the faces, vertices, and edges of seven different three-dimensional solids. They use...

From polyhedrons to platonic solids, here is a lesson that will have your classes talking! As an introduction to platonic solids, scholars cut and fold nets to create the three-dimensional solids. They use an interactive component to...

Whether you wrap it or fill it, you're using geometric concepts. Classmates use an interactive approach to learn how to find volume and surface area of cylinders and prisms in the second lesson in a five-part series. The online lesson...

Explore vocabulary related to three-dimensional shapes. An instructional website describes the characteristics of different geometric solids. Learners can use an interactive component to view nets, faces, vertices, and edges of common...

This essay, written for Teachers' Domain, describes the foresight and pattern recognition that Russian chemist Dmitri Mendeleyev used to develop the modern periodic table of elements.

An up-to-date periodic table of elements. Click on each element to see properties, history, sources, and uses. Very comprehensive.

This is a teacher's companion guide with lesson plans for the periodic table. It includes learning objectives, lecture notes, links to related sites, answers to frequently asked questions, and a glossary of related terms.

This interactive periodic table provides information about each of the elements. This is a very comprehensive site.

An interactive periodic table of elements allows users to click on elements and discover the details of each one.

A giant sized table made of wood houses a large collection of minerals from the periodic table. Click on any wooden tile to discover what the element looks like and details about its atomic structure and uses. The author even tells you...

A collection of videos exploring the elements of the Periodic Table, presented by professors, lecturers, scientists, technicians, and others at the University of Nottingham. Videos contain stories, personal experiences, fun facts,...

A great site for just about anything you could ever need or want to know about actinium.

Kid's learn about the science of the Periodic Table of Elements. Groups and periods, atomic number, types of matter.

A very detailed look at the element Gallium, a member of the Boron Group.

A very detailed look at the element Indium, a member of the Boron Group.

A very detailed look at the element Thallium, a member of the Boron Group.

Explore the periodic table like never before! This downloadable program module for students comes absolutely complete with teacher modules, student assessments, PowerPoints, Excel spreadsheets, historical text readings and more. Students...

A collection of grid puzzles that cover topics in basic chemistry, including acids, salts, alkalis, chemistry lab equipment, the periodic table, states of matter, and more. These are excellent for topic review and reinforcement. The...

EnvironmentalChemistry.com offers a thorough site all about the element neodymium.

A great reference for information on neon. This is as thorough of a site as you are likely to find.

An incredibly thorough source for information on nickel.

An exceptionally detailed and helpful resource for all sorts of information on nitrogen.

An incredibly thorough site with a wealth of basic information on oxygen. Highly recommended.

A site that has it all. This is probably the best place to start looking for information or data on osmium.