The sixth week of CSC104!

  The first term test has been done and I did not feel it as easily as I imagined. The history of comptuers made me bored and I could not learn by heart. However, I found the part of DrRacket became much easier this time. Previously, it was hard for me to remember the steps of picturing programs. For example, we need to put brackets for each step and sometimes "-" is used. The most confusing part was that how many brackets should be put while 5 or 6 orders worked at the same time.
  As the saying goes: Practice makes perfect. Aftering practising a few times, I can flip a picture horizontally or vertically without learning by roting. For the situation while many orders work together, I split up those brackets and work on each step carefully in order to have correct numberss of  brackets.
  Overall, the part of DrRacket seems much easier than the history part. Nevertheless, I am still confused about one vedio of the DrRacket for the 3rd week. I plan to ask my TA this week and get it over!