This activity should be used as a follow-up activity to learning about pushes and pulls (forces). It is part game, part worksheet. Break students into small teams...I'd suggest 5 or less if possible. Give the students 5 minutes or so to look around the classroom to find as many items that require pushes or pulls as possible. Someone in the group should keep track of all the items in a notebook/piece of paper. Once their time is up, groups should be brought back to a place where they can all sit together and write.
This is when the worksheet comes into play. Groups should look at the list of items they found and sort them into three groups. Things they can ONLY push, things they can ONLY pull, and things that can be pushed AND pulled.
As the worksheet says, there are more lines than they may need. If you'd like, you can have students share some items they found with the class. There is no answer key as there are MANY things your student might write down. If they can explain and defend their choice, I would accept it.