Welcome Year 4, I am going to post info on lion ants for you.
The adult version of a lion ant (or ant lion) called a Lacewing or Damsel Fly. They hatch from a cocoon formed by the lion ant larvae in the soil. Like a caterpillar into a butterfly.
Diagram of a lion ant using its pit to trap an ant. Once it has hold of the ant it will pull it under the soil to eat.
Lion ant in larvae form. This is what we have as class pets!
Lion ant being held in a person's hand. This gives you a good idea of its size. They are totally harmless to humans.
Close up pic of adult lion ant (Lacewing)