Grades 4 & 5 spend one week investigating tough little Tardigrades, animals with a power of adaptation, endurance, and tolerance for change that can be seen nowhere else on Earth, plus Invasive species, and animals that never stop growing. Put those three topics together and what do you get? Giant Tardigrades loose in Outer Space! What can we learn from these persistent animals, and should part of that study include sending them to the Moon? Buy a small set of live specimens, find them outsi