This document outlines the contents and assessment criteria for a 1st year bilingual essential natural science textbook. It includes 14 units covering topics like the universe, Earth, atmosphere, hydrosphere, rocks, minerals, matter, chemistry, and living beings. Students are expected to keep a well-organized notebook with lesson summaries, quotes, homework, and lab reports. Assessment is based 70% on notebook revision and 30% on attitude, with exams given after each unit and the option to retake exams.