Questions & Answers about Дети идут в парк, а я остаюсь дома.
Russian has a special pair of verbs of motion for to go on foot:
- идти – to go (on foot) in one direction, one trip, right now or in the near future
- ходить – to go (on foot) habitually, repeatedly, or in different directions
In Дети идут в парк, идут (3rd person plural of идти) focuses on a single, concrete movement: the children are going (now) to the park.
If you said Дети ходят в парк, it would mean:
- The children (regularly) go to the park / They are in the habit of going to the park,
not that they’re on their way right now in this specific situation.