After designs are approved by the teacher, students will construct the system. After projects are completed they should be presented to the class orally. Students are then instructed to predict the effect on the system if a part is removed. Students record predictions in their science journals how the removal of the part would affect the system. Students share their predictions with the rest of the class and the class evaluates the prediction and draws conclusions from the predictions.
Students analyze the games.
Accuracy classifies system as living or non-living, part accurately identified. Reasoning predictions of the effects of removal of a part of the system are logical. Clarity oral and visual presentations are easy to follow. This site has information about solar systems. This site has information about exhibits of systems.