Learn Swedish: Barnen springer ut i trädgården. - The children run out into the garden.

Barn (child) is an ett-word ending in a consonant. In Swedish, these words don't change in the plural: one child is ett barn and two children are två barn. To say "the children", you simply add the ending -en, creating barnen.

Does springer mean "run" or "are running"?

It means both! Swedish doesn't have a separate "-ing" form for actions happening right now. Barnen springer translates to both "the children run" and "the children are running" depending on the context.

Why do we use ut instead of ute here?

Swedish makes a strict difference between location and direction. Ute means you are already outside (location). Ut means you are actively moving from inside to outside (direction). Since the children are moving into the garden, we use ut.

Is trädgården a compound word?

Yes! It combines träd (tree) and gården (the yard). Put them together and en trädgård means a garden, making trädgården mean "the garden".