An experiment to test what happens when ocean water hits a freshwater estuary. Each step is demonstrated with photographs and the difference between salinity and density is explained.

Do you have what it takes to go on a space mission to the Red Planet? Think you can handle it? Take this quiz to find out!

Are plates of armor, horns, exceptionally large heads, and bony plates examples of dinosaur display or defense? Visitors to this resource will learn what scientists have concluded about the purpose of these peculiar dinosaur features.

Learn about DNA by building a model of its double-strand structure.

For this activity, students dress a horse and rider in gear from six cultures. They then answer questions about their features and about similarities and differences between styles from different cultures. The horse, rider, and gear...

A brief introduction for students to the field of archaeology.

Turn over this interactive OLogy flash card to learn about Peru, its ancient people and their descendants. Find fast facts, questions and answers, and similar bite-size pieces of information about the country.

Flip over this interactive OLogy flash card to start learning about Petra, an ancient trading center located in modern-day Jordan.

The unicorn appears in both European and Asian mythologies. Read about the differences in appearance and behavior. Take the quiz on the back to learn more about unicorns. Flashcard format.

The myth of the mermaid has been found in stories of many cultures. Take the quiz and learn more about this mythical creature. Flashcard format.

Garuda, a mythic bird-like creature, is an important figure in Hindu mythology, but you can find out what other cultures have adopted this mythological bird. Flashcard format.

Use this interactive OLogy card to learn about the Nabataeans, an ancient Middle Eastern civilization.

Flip over this interactive OLogy card to find fast facts, questions and answers, and similar bite-size pieces of information about Jordan.