The periodic table of elements is one of the greaest achievement in chemistry, and understanding its arrangment helps us to understand many aspects of chemistry. This pathway provides resources to understand several of the trends on the periodic table, such as electronegativity and the number of bonds an atom can form.

An interactive simulation that teaches about polarity, electronegativity, and bonds by changing the electronegativity of atoms and bond angles in a molecule to see how it affects polarity. This simulation can either be downloaded or played online and includes handouts, lesson plans, and additional materials.

Explore molecule shapes by building molecules in 3D. How does molecule shape change with different numbers of bonds and electron pairs? Find out by adding single, double or triple bonds and lone pairs to the central atom. Then, compare the model to real molecules!

Students studying molecule shapes will better understand its concepts with this virtual experiment that tests how a molecule's shape changes due to repulsions between atoms. Learning is further enhanced by building molecules in 3D.

Principles of Macroeconomics 2e covers the scope and sequence of most introductory economics courses. The text includes many current examples, which are handled in a politically equitable way. The outcome is a balanced approach to the theory and application of economics concepts. The second edition has been thoroughly revised to increase clarity, update data and current event impacts, and incorporate the feedback from many reviewers and adopters. Changes made in Principles of Macroeconomics 2e are described in the preface and the transition guide to help instructors transition to the second edition. The first edition of Principles of Macroeconomics by OpenStax is available in web view here.

By the end of this section, you will be able to:

Explain the relationship between indexing and inflation
Identify three ways the government can control inflation through macroeconomic policy

By the end of this section, you will be able to:

Explain the reason for open market operations
Evaluate reserve requirements and discount rates
Interpret and show bank activity through balance sheets

By the end of this section, you will be able to:

Explain how banks act as intermediaries between savers and borrowers
Evaluate the relationship between banks, savings and loans, and credit unions
Analyze the causes of bankruptcy and recessions

Believe it or not, most kids graduate high school lacking basic personal finance skills. That's where TeenAnalyst.com comes in. The basic idea was to give kids the information they need to become successful investors.

Understandable lessons about numerous aspects about the composition, function, and interactions of proteins. Each starts with an interactive quiz and links to a tutorial.