HELP! need to memorize endochonral ossification steps

  1. I have a test on Monday over bones in general (Type/breaks/ossification ect) in my A&P(I) class, but i need to write an essay during the test on what is involved in endochondral ossification and bone lengthening. This will be almost 1/3rd of my total grade for this test. Any advice on how to go about remembering this process, and then turning the steps into an essay would be GREATLY appreciated. THANK YOU!
    P.S. 1st post ever