Layers of the Atmosphere buy different colors of aquarium gravel. layer a 1000 ml graduated cylinder and made the layers of the atmosphere to scale. The students cannot grasp the idea how big each layer is, but when scaled it becomes easy to visualize. They love it! troposphere - 15 ml stratoshpere - 45 ml mesosphere - 45 ml thermosphere - 895 **In 4th grade, we only teach the first 4 layers.**
Linaria purpurea 'Canon J. Went', toadflax Easy to grow and flowering prolifically in a sunny spot, this undemanding perennial is wonderful in naturalised planting schemes gravel gardens or herbaceous borders. Throughout summer, slender upright spires are covered with small, snapdragon-like flowers in a pretty shade of shell pink, which attract bees and other beneficial insects.