Coral reefs play an important role in our ecosystem, and today you will learn more about some of the dangers they face.
Prepare to be transported to the desert. You will discover how some animals and plants adapt to survive life in the harsh desert.
It's time to go on a safari and learn all about elephant family units. If you pay close attention, you might even hear an elephant sounding off.
How can one little planet cause so much commotion? Get ready to follow Pluto's path from Planet X to becoming Pluto, a dwarf planet.
Our body systems are always at work. In this lesson, Ms. Maria explores the digestive system and stomach.
Our body systems are always at work. This lesson introduces you to our largest organ, the skin.