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  • Science 4
    • UNIT 1: Humans and animals
    • 1.1 skeletons
    • 1.2 The human skeleton
    • 1.3 Why do we need a skeleton?
    • 1.4 Skeletons and movement
      • Science 4th grade | UNIT 1: Humans and animals 1.4 Skeletons and movement
      • Science 4th grade | UNIT 1: Humans and animals 1.4 Skeletons and movement
    • 1.5 Drugs as medicines
    • 1.6 How medicines work?
    • Check your progress
    • UNIT 2: Living things and environment
    • 2.1 Amazing birds
    • 2.2 A habitat for snails
    • 2.3 Animals in local habitat
    • 2.4 Identification keys
    • 2.5 Identifying invertebrates
    • 2.6 How do we effect the environment?
    • 2.7 Wonderful water
    • 2.8 Recycling can save the earth!
    • UNIT 3: Solids‚ liquids and gases
    • 3.1 Matter
    • 3.2 Matter is made of particles
    • 3.3 How do Solids‚ liquids and gases behave?
    • 3.4 Melting‚ Freezing‚ and boiling
    • 3.5 Melting in different solids
    • 3.6 Melting and boiling points
    • Check your progress
      • Science 4th grade | UNIT 2: Living things and environment Check your progress
      • Science 4th grade | UNIT 3: Solids‚ liquids and gases Check your progress
    • UNIT 4: Sound
    • 4.1 Sound travels through the materials
    • 4.2 Sound travels through different materials
    • 4.3 How sound travels?
    • 4.4 Loud and soft sounds
    • 4.5 Sound volume
    • 4.6 Muffling sounds
    • 4.7 High and low sounds
    • 4.8 Pitch on percussion instruments
    • 4.9 Having fun with wind instruments
    • Check your progress
    • UNIT 5: Electricity and magnetism
    • 5.1 Electricity flows in circuits
    • 5.2 Components and a simple circuit
    • 5.3 Switches
    • 5.4 Circuits with more components
    • 5.5 Circuits with more buzzers
    • 5.6 Mains electricity
    • 5.7 Magnets in everyday life
    • 5.8 Magnetic poles
    • 5.9 Strength of magnets
    • 5.10 Which metals are magnetic?
    • Check your progress
    • Reference