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.
Sunday, February 25, 2007. Oversize textbooks, rolling backpacks, sub-zero mountaineering parkas: The gear required to equip today's student is getting bigger. But the school locker, that shrine to adolescent personal space, is not. A typical school locker is one foot wide, one foot deep and six feet high. The dimensions are meant to balance the needs of students -- who desire sufficient space for their books, jackets and Justin Timberlake collages -- and the concerns of school officials, who don't want lockers so large as to hold an entire wardrobe or an entire student.