Are you tired of sifting through countless textbooks to find the truly essential content for your science lessons? Are you looking for exciting and motivating materials instead of dry theory? Then our series "Basic Knowledge in Science" is just right for you! Here, the most important foundational knowledge in the subject of science for grades 2 to 4 has already been compiled for you. With a variety of engaging and motivating materials, such as experiments, worksheets, puzzles, and group work, this volume clearly and thoroughly conveys the basic knowledge about air, water, and weather. This allows your students to learn the content in a practical way, without neglecting theoretical knowledge. A glossary and learning assessment tasks ensure that your students internalize the most important content and terminology, leading to maximum learning.