Bone marrow. The inside of your bones are filled with a soft tissue called marrow. There are two types of bone marrow: red and yellow. Red bone marrow is where all new red blood cells, white blood cells, and platelets are made.
Mine is 8m x 7m (3m is 10 feet, so around 27 x 23 feet). This is normal for an Australian classroom, although there's a fair bit of variation.
1 Be the Teacher In order to establish a positive emotional environment in your classroom you must first arrange the room in a manner that will facilitate your long term goals. 2  The physical space is the groundwork for the type of classroom you run. How to structure the emotional environment. 2  The role of self-esteem in the classroom. 3  Konza, Grainger & Bradshaw (2001) in their book, Classroom Management: A Survival Guide explain that the physical environment of a classroom explains a lot about your expectations as a teacher.