1. Roll the green colored clay into a round platform and use it as the nuclear reactor body.
2, with the red and blue color clay were pinched out of a cylinder and three three prisms, and then glue them together, as the base.
3. Glue the base and the arrow body together.
4: Roll the yellow colored clay into a cone and glue it to the arrow body.
5, then insert a toothpick, the nuclear reactor is finished.