Pottemakeren viser dreieskiven og leirklumpen.

In Norwegian, the definite article is usually attached to the end of the noun instead of being a separate word like English the.

So:

• pottemaker = potter
• pottemakeren = the potter

The ending -en is a common definite ending for many singular nouns in Bokmål.

Because Norwegian often puts the onto the noun itself.

In this sentence:

• pottemakeren = the potter
• dreieskiven = the pottery wheel
• leirklumpen = the lump of clay

This is one of the biggest differences from English. Instead of saying a separate word before the noun, Norwegian usually uses a suffix.

Yes. viser is the present tense of å vise.

Examples:

• å vise = to show
• viser = shows / is showing
• viste = showed
• har vist = has shown

So Pottemakeren viser ... means The potter shows ...

Because the sentence is talking about specific things: the wheel and the lump of clay, not just any wheel or any lump of clay.

Compare:

• Pottemakeren viser dreieskiven og leirklumpen.
  = The potter shows the pottery wheel and the lump of clay.

• Pottemakeren viser en dreieskive og en leirklump.
  = The potter shows a pottery wheel and a lump of clay.

So the definite endings tell you these are particular, identifiable items.

It is a compound noun plus the definite ending:

• potte = pot
• maker = maker
• pottemaker = potter
• pottemakeren = the potter

Norwegian uses compound nouns very freely, just like German and often more than English does.

It is also a compound noun:

• å dreie = to turn / rotate
• skive = disc / plate
• dreieskive = turning disc, here pottery wheel
• dreieskiven = the pottery wheel

The exact English translation depends on context, but grammatically it is one compound noun with a definite ending.

Again, it is a compound noun:

• leire / leir = clay
• klump = lump / clump
• leirklump = lump of clay / clay lump
• leirklumpen = the lump of clay

A useful thing to notice is that Norwegian often combines nouns directly rather than using of.

This is the normal Norwegian main-clause word order:

• subject
  • verb
    • object

So:

• Pottemakeren = subject
• viser = verb
• dreieskiven og leirklumpen = objects

This is very similar to basic English word order.

Norwegian is also a V2 language, which means the finite verb usually comes in the second position in main clauses. For example:

• Pottemakeren viser dreieskiven.
• I dag viser pottemakeren dreieskiven.

In both sentences, the verb viser stays in second position.

Because Norwegian, like English, can join two noun phrases with og = and.

Here the structure is:

• dreieskiven = the pottery wheel
• og = and
• leirklumpen = the lump of clay

You do not need anything extra between them. Each noun already carries its own definite marking.

Yes, for many speakers that is possible.

In Bokmål, some feminine nouns can appear either with:

• -en definite singular
• or -a definite singular

Since skive is often feminine, you may hear or see:

• dreieskiven
• dreieskiva

Both can be correct in Bokmål, depending on style, dialect, and personal preference.
The version in your sentence uses -en, which is very common and completely standard.

No. Å vise is quite flexible, much like English to show.

It can mean:

• to show something physically
• to demonstrate
• to point out
• to display
• to indicate

In this sentence, it most naturally means physically showing the wheel and the clay.

You would use indefinite forms:

• En pottemaker viser en dreieskive og en leirklump.

Here:

• en pottemaker = a potter
• en dreieskive = a pottery wheel
• en leirklump = a lump of clay

So the main difference is:

• definite nouns get endings like -en
• indefinite nouns often use a separate article like en

A rough guide for an English speaker might be:

POT-teh-mah-keh-ren VEE-ser DRY-eh-skee-ven oh LYER-klum-pen

A few notes:

• pottemakeren has stress near the beginning.
• viser sounds like VEE-ser.
• dreie- is tricky; it has a glide similar to dry-eh.
• leir is pronounced somewhat like lyer in many accents.

Exact pronunciation varies by dialect, but that gives a useful starting point.