1. Variety of things around us
1.1. Living Things
1.1.1. Need air, water and food
1.1.2. Grow
1.1.3. Move by themselves
1.1.4. Respond to changes
1.1.5. Reproduce
1.1.6. Die
1.2. Non-Living Things
2. Living Things
2.1. Animals
2.1.1. Mammals
2.1.2. Birds
2.1.3. Fish
2.1.4. Insects
2.2. Plants
2.2.1. Flowering
2.2.2. Non-flowering
2.3. Fungi
2.4. Bacteria
3. Non-living Things
3.1. Materials
3.1.1. Examples
3.1.1.1. Cotton
3.1.1.2. Rubber
3.1.1.3. Wood
3.1.1.4. Leather
3.1.1.5. Wool
3.1.1.6. Metals
3.1.1.7. Ceramics
3.1.1.8. Plastic
3.1.1.9. Glass
3.1.2. have properties that their uses are based on
3.1.2.1. Hardness
3.1.2.1.1. Hard
3.1.2.1.2. Soft
3.1.2.2. Strength
3.1.2.2.1. Strong
3.1.2.2.2. Weak
3.1.2.3. Flexibility
3.1.2.3.1. Flexible
3.1.2.3.2. Stiff
3.1.2.4. Ability to float or sink in water
3.1.2.4.1. Floats
3.1.2.4.2. Sinks
3.1.2.5. Degree of transparency to light
3.1.2.5.1. Transparent
3.1.2.5.2. Translucent
3.1.2.5.3. Opaque
3.1.2.6. Magnetic property
3.1.2.6.1. Magnetic
3.1.2.6.2. Non-magnetic
3.1.2.7. Thermal conductivity
3.1.2.7.1. Good conductor of heat
3.1.2.7.2. Poor conductor of heat
3.1.2.8. Electrical conductivity
3.1.2.8.1. Electrical conductor
3.1.2.8.2. Electrical insulator