This overview of isotopes explores where isotopes come from and returning an atom to its normal state.

This overview of liquids explores what a liquid is and how matter becomes changes into a liquid.

"Matter is everything." So begins this comprehensive website on the physical and chemical properties of matter in its four main states: solids, liquids, gases, and plasmas. The text is large and easy-to-read. Students will enjoy the downloads, activities, and quizzes at this site.

This informative site contains basic information, offered in a straightforward way, on what constitutes a mixture. Examples and illustrations are part of this site.

Here you can learn all about plasma. Explore what plasma is, its basic characteristics, and how plasma is created.

This site provides a detailed overview of chemical reactions. Content explores what a reaction is, as well as different types of reactions, reaction rates, how to measure compounds to create a reaction, and "stuff" you can add to a reaction to speed it up or slow it down.

Chem4Kids provides an overview of the solid state of matter that explores the characteristics of solids as well as how matter in other states becomes a solid.

This site provides a great overview of stoichiometry, the part of chemistry that studies amounts of substances that are involved in reactions. Content focuses on what you measure, and includes two examples.

Here you can learn all about carbohydrates! Content explores what carbohydrates are used for in the body, as well as the different types: saccharides, regular sugars, and polysaccharides.

Chem4Kids! provides an overview of the symbols representing numerical values in chemical equations. Each symbol is defined and described.

This site provides a general overview of thermochemistry, the division of chemistry that deals with temperature in chemical reactions. Content explores what heat and cold really are, the heat and energy around you, and a bit about Lord Kelvin.

This StudyCards stack enables students to review the vocabulary that describes chemical bonding.

This activity is designed to be used a pre-test over types of chemical reactions and balancing.

This is the official website of an international organization with the goal of promoting lasting peace by showing youth from around the world how to live with diversity in understanding.

Contains plans for one 50-minute lesson that teaches about using dialogue tags like "he said" or "she answered." In addition to student objectives and standards, these instructional plans contain links to PDF handouts and links to sites used in the lessons as well as assessment and reflection activities.

Students construct chords, secants, and tangents. From those constructions, they develop a deeper understanding of the terms, as well as explore certain properties of the constructions.

This site provides a complete biography of Christian Doppler (1803-1853 CE), founder of the Doppler principle of sound waves. Includes quotes from Doppler and those who knew him, as well as an outline of his scientific achievements.

This site from Bibliomania presents the full text version of Dickens' novel "A Christmas Carol". A brief summary of the novel is also included. A great site to check out on the subject.

Strategies to help students recognize the order of events in a selection provided by a standardized test preparation site intended for fourth grade. Includes strategies such as plot diagrams, probable passages, story mapping, summary blueprints, and timelines.

This Chronological Order graphic organizer allows students to order events from text they are reading.