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.
Among these schools, 414 (90 percent) have class sizes larger than 15, with an average class size just under 20 students. Details on the target schools and a sample of districts with these focus schools are listed in the tables below.mong these schools, 414 (90 percent) have class sizes larger than 15, with an average class size just under 20 students. Details on the target schools and a sample of districts with these focus schools are listed in the tables below.