U zadnjem stupcu nema dovoljno mjesta, pa učiteljica kratku napomenu piše ispod tablice.

Because u can take different cases depending on meaning.

• u + locative = location, meaning in
• u + accusative = movement into something, meaning into

Here the sentence describes where there is not enough space: in the last column. That is a location, so Croatian uses the locative: u zadnjem stupcu.

Stupac is the dictionary form, the nominative singular. After u in this sentence, the noun has to be in the locative singular, and that form is stupcu.

This kind of change is normal for some masculine nouns, especially ones ending in -ac. So:

• stupac → u stupcu
• pisac → o piscu

So u zadnjem stupcu is the regular locative form.

Yes. Zadnji is very natural here and is commonly used for the last item in a row, list, column, line, and so on.

You could also hear posljednji, and it would mean almost the same thing here. But zadnji sounds very normal and everyday in u zadnjem stupcu.

This is a very common Croatian pattern for saying that something is absent or unavailable.

• ima = there is / there are / has
• nema = there is not / there are not / does not have

So u zadnjem stupcu nema dovoljno mjesta literally works like in the last column, there is not enough space.

Also, after nema, Croatian usually uses the genitive, and dovoljno also normally takes the genitive. That is why you get mjesta.

It is genitive in this sentence.

There are two reasons for that:

• nema often triggers the genitive
• quantity words such as dovoljno also take the genitive

So dovoljno mjesta means enough space. Here mjesta means space/room, not places. The form happens to look the same as some other forms, but in this sentence the meaning is clearly space.

Here pa means something like so, and so, or therefore.

It connects the two clauses in a natural, flowing way:

• there is not enough space in the last column,
• so the teacher writes a short note below the table.

It is less formal than words like stoga and often more natural in everyday language.

Because kratku napomenu is the direct object of piše.

The basic form is:

• kratka napomena = a short note

But as a direct object in the sentence, it goes into the accusative:

• kratku napomenu

Both words change because the adjective and noun must agree in gender, number, and case.

Piše is the imperfective verb, from pisati. It presents the action as ongoing, general, or simply as the act of writing.

Napiše is perfective, from napisati, and it emphasizes completion: the note gets written and finished.

In this sentence, piše sounds natural because the sentence is just describing what the teacher does in this situation. If you used napiše, the idea of a completed result would be stronger.

Because ispod takes the genitive case. The noun tablica therefore becomes tablice.

So:

• tablica = table
• ispod tablice = below the table

Unlike u, which can take different cases depending on motion or location, ispod normally uses the genitive.

Croatian word order is much more flexible than English word order.

Both of these are possible:

• učiteljica kratku napomenu piše ispod tablice
• učiteljica piše kratku napomenu ispod tablice

Putting kratku napomenu before piše can give the object a little more prominence, or it can simply sound better in the flow of the sentence. The basic meaning stays the same.

Because Croatian does not have articles like the and a/an.

Whether something is definite or indefinite is usually understood from context. So učiteljica, stupcu, and tablice can be translated with the in English when the context makes them specific, even though Croatian does not use a separate word for it.