Punch two holes on opposite sides near the top of each cup.
A functional, simple balance scale can be made at home using household materials, perfect for science projects or educational activities. A clothes hanger (preferably with notches). Two paper or plastic cups. Kitchen twine, yarn, or string. A single hole punch. balance scale
A base (like a tall water bottle, cardboard box, or simply holding the hanger). Punch two holes on opposite sides near the top of each cup