我收集的这套资料有3本跟别的不一样,称为红蓝绿三个级别,也许就是你说的Course1、2、3。
另外15本是一套的,据说适合 6 至 8 级的学生 (Grade 6-8) - Middle School,这套国内好象引进过,中文版叫《科学探索者》
A. Life Science Books:
• Life’s Structure and Function
• From Bacteria to Plants
• Animal Diversity
• Human Body Systems
• Ecology
B. Earth Science Books:
• Earth Materials and Processes
• The Changing Surface of Earth
• The Water Planet
• The Air Around You
• Astronomy
C. Physical Science Books:
• The Nature of Matter
• Chemistry
• Motion, Forces, and Energy
• Electricity and Magnetism
• Waves, Sound, and Light