This is the 11624th most frequent Spanish word.
formarán
"Formarán" means "they will form" or "they will create."
Here, "formarán" is used to indicate the future action of establishing or assembling a team.
Los líderes formarán un equipo para el nuevo proyecto.
The leaders will create a team for the new project.
In this case, "formarán" describes a natural process in the future where clouds come together to create a storm.
Las nubes formarán una tormenta en el cielo.
The clouds will form a storm in the sky.
In this sentence, "formarán" is used in the future tense to describe an action that the students will take - to form a circle.