Get can be used to mean "arrive" especially when followed by an adverb of location or the preposition to. Somebody that has to get to the station is then in the process of motion. If I say "got there at ten p.m.", then I am also talking about motion and the process of moving between two points.

Get can be used in place of buying or obtaining when preceding an object that has come into your possession. So when you "get a coffee" in the morning, you buy it and when you "get a diploma", it means you receive it after a period of study.

Get followed by a preposition will relate the idea of going or coming. So to get in would mean that you could be about to enter a vehicle, for example. Similarly, to "get out" would refer to your ability to leave a place or move outside from an enclosed space.

When get is followed by an adjective, that adjective will describe the state you could become. So if you "get rich", this would mean that you have been able to acquire wealth and if you "get poor", this would mean that you have lost your means to live adequately or have lost your better standard of living. If get is followed by a past participle adjective like tired then to "get tired" would be a way of describing that state of mind and the person using it is relating the notion of fatigue.

If get is followed by a preposition and a noun phrase, or there is an object between the verb and the preposition, then we can obtain some very useful idiomatic expressions. The meaning of the idiomatic expression is then much broader than just the meaning of the phrasal verb alone. So if "get out" once meant moving into an external space, or being told to leave a place immediately, to "get something out of this" would mean that the person has been able to learn something out of given situation. When learning phrasal verbs and the expressions they make up, the learner has to become familiar then with a real and figurative sense of the words that are put together.

For example you make your bed because you are arranging elemnetns so that the mattress, sheet, blanket and cover are all arranged differently. The final product is a new creation as it were and that is why make is used. We do our hom work on the other hand because it is an activity if there is anything created it is the act of doing something but there is no physical change in the final product. Students may argue that a completed notebook is proof of a physical change.

Then I would go onto something more tangible like you make a sandcastle out of sand or a house out of bricks but homework is not made of physical materials other than your transcription of information from book to notebook page. Students may argue that this is not how it done in their language or that the English language is being too specific here. it is not your place to enter into an arguement about how the language was created or compromise your teaching to satisfy the client. Similar difficulties occur between the use of get and go when they are both used for locomotion and the movement from one point to the next.

The success of get is that is also used for expressions like understanding something or to acquire something (see Idiomatic Expression I) but go has become more widely used for expressions the intention of doing something as well as just moving about. That is off course when it is placed in the gerund form before an infinitive which might be itself as well like "he is going to go".Go is used in front of a variety of infinitives like up and down to refer to a literal sense of rising or descending. There is a figurative sense which comes with phrasal verbs, so to go up or down 100 pounds in a week means the person has gained or lost that amount of weight in that period of time. when asked what rising and falling has o do with weight gain or loss, I would just say think of weight like a number which rises and falls.