What is a symbol? What are some symbols of the United States?

A seed goes into the soil. Soon, a young plant grows. How does a young plant grow to be a parent ...

Some animals have legs. Some animals have wings. Some animals have fins. How do animals use these...

'We pull some things. We push other things. What do we push and pull?'

Some kinds of weather can be dangerous. How can you be safe in dangerous weather?

The imaginations of generations of children from all over the world have been inhabited by the un...

The rain stops. The Sun comes out. There is a rainbow in the sky. How does light make a rainbow?

'Ramona needs new shoes. She wants to buy some other things, too. What does Ramona want, and what...

Fara and Kamal look for shapes in the city. But they do not see a circle. Where is the circle?

'Meet Juan, Ana, and Tess. These children live in places around the world. See their homes and sc...