Criteria	5	10	15	20
Team Selection	·          Two or three members in the group work together negatively	·          Two or three members in the group are placed together by the teacher	·          Two or three members in the group are asked to work together	·          Two or three members in the group agree to work together
Design	·          The group has trouble planning the design and/or no sketch is available from which to build	·          One member of the group plans the catapult design and/or a rough sketch is developed	·          The group plans the catapult but only one or two members are developing the design.  ·          A sketch is on paper.	·          The catapult is well planned and agreed upon by all members of the group.  ·          The design is sketched and well thought out
Construction	·          The catapult has little or nothing to do with the sketch if it exists and only one member of the group worked on the construction	·          The catapult has little to do with the original sketch if it exists.  ·          All members of the group worked on the construction	·          The catapult is a good representation of the sketch ·          All members of the group are instrumental in the construction	·          The catapult is constructed as an exact reproduction of the sketch ·          All members of the group are instrumental in the construction
Operation	·          I does not work	·          It works	·          It works well	·          It works great
Cooperation	·          The group did not work well during any phase of the process:  planning, construction, operation and the final tournament	·          The group had some difficulty during the process:  planning construction, operation and the final tournament	·          The group worked well during the entire process:  planning, construction, operation and the final tournament	·          The group worked flawlessly during the entire process:  planning, construction, operation and the final tournament
Total