Explore, design, and engineer across six diverse ecosystems with Echo the Robot!This STEM Biome Adaptation Challenge BUNDLE includes all six of Echo's adventures—Arctic, Desert, Rainforest, Savannah, Wetlands, and Mountain. In each project-based learning unit, students help Echo adapt to survive in a new biome by observing animal adaptations, designing solutions, and testing their ideas through engaging engineering challenges. What's Included in Each Biome Unit: Original short story to introduc