Simple text and photographs explain Independence Day, how and why we celebrate it to honor the founding of the United States.

How can a firefly find the one, among so many? On a summer evening, just as the stars blink on, a firefly lands on a flower. Lights start to flash all around her-- first one, then three, seven. Hundreds. Thousands. How will she find just one flash among them? And will he see her flash in return? In evocative photographs and lyrical language, Rick Lieder and Helen Frost offer a true story of how two fireflies come together after finding each other's...

When you are outside on a summer's day, have you ever seen fine powder on a flower or floating on the breeze? That's pollen, almost invisible, waiting for the only thing it needs -- a ride on the wind, or a wing, or a feather. And it's the pollinators, small and mighty, who hold the world together with their work.

Simple text and photographs explain Presidents' Day and why we celebrate it to honor those who have been president.

Simple text presents facts about the properties and behavior of water in the state of a gas.

Simple text and photographs present the work of Martin Luther King, Jr., and the celebration of his holiday.

Simple text and photographs describe the stages of the water cycle.

Explains how and why Memorial Day came to be celebrated as a holiday.

Learn about the physical characteristics, the eating habits, and the extinction of the wooly mammoth.

Introduces the land, animals, and people of France.