This rubric is designed to assess student performance in an introductory Grade 1 Earth sciences course. It evaluates foundational knowledge and skills related to basic Earth science concepts; including weather; seasons; landforms; and natural resources. The rubric provides clear criteria for teachers to measure student understanding while offering students guidance on expectations for their learning. The rubric assesses four key areas: knowledge of Earth science concepts; ability to observe and describe natural phenomena; participation in hands-on activities; and communication of ideas. Each category includes specific performance levels to help teachers identify student progress and areas for growth. For example; in the knowledge category; students may demonstrate basic recognition of weather patterns or advanced understanding of seasonal changes. Using this rubric supports student learning by providing consistent and transparent feedback. It helps young learners understand what they are expected to know and do; fostering a sense of achievement as they meet each criterion. Teachers can use the rubric to tailor instruction; reinforcing concepts where students need additional support. The rubric also encourages engagement through hands-on exploration; such as observing clouds or sorting natural materials. By emphasizing observation and description; it builds early scientific inquiry skills. Additionally; the communication component helps students practice sharing their ideas clearly; whether through drawings; simple sentences; or verbal explanations. Overall; this rubric serves as a practical tool for both assessment and instruction; ensuring that Grade 1 students develop a strong foundation in Earth sciences while fostering curiosity about the natural world.