Most of the time we start a new course, we buy the materials What we want. Although it may not seem like it, there are many types. For example, there are a wide variety of pens. However, teachers may not want the usual ones, but specific ones. What can we do in that situation? It is clear to pay attention to them, because if not we will not be able to follow the course with the necessary normality.
Let's explain it another way with an example. In the Plastic subject, it is quite common to ask for a certain type of pencil. Of course, we will have to acquire it because we will have to do some work that will require it. Otherwise, the results will not be as desired. Our recommendation is that you pay attention to the teachers, acquiring the materials that you request.
Keep in mind that on many occasions it will be the teachers themselves who will give you a list with the things you need to buy (apart, of course, from the textbooks), so it will be better that you have those items in the shortest time possible, since this way the whole class can adapt to the teachings, at the same time .
For the rest, if you have all the required materials, you should not have major problems. When they are used up, you will only have to buy others of the same type, as the situation requires. It's a matter of going renovating the objects that we have in order to be able to continue using us and, therefore, to be able to follow the classes to the letter.