5.a   http://studio.code.org/sections/RPECJN

5.b   http://studio.code.org/sections/KOBZHZ

6.b   http://studio.code.org/sections/IAMGPG

8.a   http://studio.code.org/sections/LMFEZX

8.b   http://studio.code.org/sections/LLKATX