Below is the lecture on sand that we have covered so far. One thing that I have noticed, that you all need to consider is in most cases with green sand the mold is poured with the pattern horizontal. In this case the pattern is centered horizontally in the rectangular mold and fed with a main gate sprue from one side (see cross-section image in last slide). This main gate will usually then have horizontal channels coming from it that lead to the pattern. On the opposite side, there are usually channels that lead to vents and risers.
Lecture is updated to include information covered to date. You will be responsible for the information through the slide on simulation software (I believe that is around slide 100). Note that some information about aluminum has been added at to the lecture, you are also responsible for this information as well.