iRubric: A Model of Our Solar System rubric - E52426: RCampus iRubric E52426: Grade 4 is beginning a new science unit on Planets and Other Objects in Space. For our project, students will take their knowledge of our solar system and create a 3-dimensional model of it. The planets should be in the correct order and be relatively proportioned to each other (example: Mars should not be bigger than Jupiter). Solar System Project Rubric - Pinterest Planets of the Solar System - Research Project with Rubric - 5 page research project on all planets of our solar system with rubric and research organizer. This project will engage your students as they learn about each of the planets of the solar system.