The more precisely you are able to specify the learning content you will be working from,the better sense you will have of appropriate objectives.
这里 you will be working from 是省略that的定语从句 修饰 content 用 from 是因为 working是不及物动词 不能直接跟宾语 省略的that 代替先行词 作 from的宾语 即 from the learning content
It has been emphasized that the teaching of physical skills requires different teaching techniques than the teaching of factual understandings.这里用than是除.之外的意思