A Tangler is a puzzle that must be solved by a team. Groups of 3-6 students read and interpret cl...

Have you ever wondered why a prism turns ordinary sunlight into a rainbow? Isaac Newton knew why....

Have you ever wondered why objects drop to the ground or what keeps the Moon from crashing into t...

A Friend in Need is a Man's Best Dog is a collection of humor, essays and verse, both published a...

Have you ever wondered why it seems like you are standing still - even though you are on a planet...

Have you ever wondered why a 10-tonne boat floats but a tiny pebble sinks? Archimedes knew why. H...

Powerful cross-currents of both decline and resurgence have been affecting American political par...

Have you ever seen a magician make something seem to disappear Did it make you wonder if anything...

Like the nationally known Destination Imagination competition, Mind Builders offers simple engine...

Tanglers Too! will help students develop problem-solving skills while also improving their abilit...

Seals, otters, oysters, fish, pelicans, and sharks are a few of the animals that make up an ocean...

Prairie dogs, vultures, grasshoppers, goldfinches, pocket gophers, and bison are some of the many...

Snakes, lizards, rabbits, mice, mountain lions, and hawks are some of the many animals that make ...

Be the one to make a difference in your students' thinking! With more than 100 games to choose fr...

Describes how the plants and animals of the tundra serve as food for each other.

Beetles, toads, squirrels, owls, deer, and black bears are some of the many animals that make up ...

Prairie dogs, vultures, grasshoppers, goldfinches, pocket gophers, and bison are some of the many...