Positive and negative shapes. My Zentangle hummingbird. This is an example for my students' project. This can be use for several concepts: positive / negative space, reflection, line and shape, etc. I did this project with my grade students.
build and use your own cold frame to grow veggies now on the cheap, carpentry woodworking, diy renovations projects, gardening, Our cold frame built form a pair of old window sashes and two pieces of 2 x 10 x 10 framing lumber
I needed a hot bed to start my seedlings in the spring. I needed it high enough so I did not need to bend down as I find it difficult to stand up afterwards. It is constructed from pipe pallets a recycled wall frame and two recycled Aluminium windows.