Desert Ecosystems Hands-on Activities - Ecosystems and Desert Biomes Project: All About Terrariums - Learn - Build - Teach! Hands-on Project-Based Learning! Great Earth Day Project!Students learn all about desert ecosystems and then build their own Desert Terrariums in class. Once they have learned their new skills, it's their turn to be the instructor and teach others how to make a Desert Terrarium. Great for a Parent Night Event. Imagine students in the role of teachers leading a workshop,