Twelfth graders examine protein shapes through a computer program that can be downloaded off the Internet. The program allows students to see how proteins look when viewed with X-ray crystallography.

Seventh graders write observations of organisms based on both audio and video sources. They describe organisms which they view using appropriate adjectives.

An extensive lesson from UCLA on drawing resonance structures. Includes several examples, and links to related topics. Practice problems are also provided.

This section from "An Introduction to Chemistry" describes how to draw resonance structures. A few examples are given. Also find links to 3-D molecular models of the examples.

A slide show with several slides dedicated to the topic of resonance in Lewis structures. Diagrams help illustate the examples. A practice example is provided.

[Free Registration/Login may be required to access all resource tools.] The following online tutorial describes how a covalent bond forms, including the energy change involved in the process.Students will be asked to use the octet rule...

The Molecular Structure chapter from "An Introduction to Chemistry" textbook discusses the formation of covalent bonds, drawing Lewis dot structures, and the resonance and molecular geometry of molecules. Many pictures and examples are...

For practice drawing resonance structures, visit this page. It contains four practice problems along with the answers.

This audio book, narrated by author Mark Bishop, describes how to draw resonance structures. Contains a few examples to help understand the steps. Also find links to tutorials and animations about other chemistry topics.

[Free Registration/Login Required] Explore resonance by manipulating the electrons and bonds, and then answer a challenge question about the concept.

A step-by-step explanation on how to draw Lewis structures. An example problem is worked through to accompany the steps. There is also a list of the exceptions and a short explanation of resonance.

This power point covers the molecular structure chapter from "An Introduction to Chemistry". It reviews the main ideas and shows many examples of covalent bonding from valence electrons. Also includes detailed steps to drawing lewis dot...

In this StudyCard activity, students are asked to describe the geometry and polarity of several molecules and ions. Geometries covered include linear, bent, trigonal planar, trigonal pyramidal, and tetrahedral. Students will need to have...

Detailed explanation of Valence Shell Electron Pair Repulsion (VSEPR) Theory with examples and questions for the reader to check comprehension. Also includes step-by-step instructions for correctly building molecules using VSEPR Theory....

Students will learn about bone structure, bone development and growth, and bone functions. Later, students will apply this understanding to answer the Challenge Question presented in the "Fix the Hip" lesson and use the acquired learning...

Students learn about frequency and period, particularly natural frequency using springs. They learn that the natural frequency of a system depends on two things: the stiffness and mass of the system. Students see how the natural...

Great animations showing how sound is produced.