Listening to a cute story about an imaginary planet helps with English comprehension and the additional activities encourage reading and writing skills.

An assessment question where students examine data about an imaginary planet to decide if it could support human life.

Read and listen to a story about a connection between Earth and an imaginary planet called Fliptune. See how Billy, a boy from Earth, helps the people of Fliptune by making their planet warmer so things can grow.

Throughout this unit you will make an imaginary journey that will transport you from the remotest infinity of the universe around us, to the surface of our planet. During this trip you will see the main features and components of our...