Ⅰ.
Composition of matter
01 Element
02 Atoms and Molecules
03 Ion

Ⅱ.
Electricity and Magnetism
01 Generation of electricity
02 Current, voltage, resistance
03 Magnetic action of current

Ⅲ.
solar system
01 Earth
2 months
03 Composition of the solar system

Ⅳ.
Plants and Energy
01 Photosynthesis
02 Plant Respiration

V.
Animals and Energy
01 Digestion
02 Circulation
03 Breathing
04 Excretion

Ⅵ.
Properties of matter
01 Properties of Materials (1)
02 Properties of Materials (2)
03 Separation of mixtures (1)
04 Separation of mixtures (2)

Ⅶ.
Hydrosphere and ocean circulation
01 Distribution and use of water rights
02 Characteristics of seawater
03 Ocean circulation

Ⅷ.
Heat and Our Life
Column 01
02 Specific heat and thermal expansion

Ⅸ.
Disasters, Catastrophes and Safety
01 Disasters, Catastrophes, and Safety