This lesson has some wonderful ideas for older elementary aged children. The total lesson provides thoughtful learning for middle through high school students. It shows how geometric shapes, such as polygons and triangles, make up elements of architecture. The story of how architecture evolved is well done! This would work well with Montessori's Great Lessons.
It's winter and I'm thinking about butterflies. We have a garden of milkweed for monarch butterflies that travel through Colorado. It's a wonder to watch the butterflies lay their eggs on the milkweed and observe the catepillars grow and endlessly eat the plants. The LA Times has a great article about making your own milkweed gardent for the fragile Monarch Butterfly.