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Science, Grade 3, 2005

1.) Classify substances as soluble or insoluble.

Examples:

- soluble—sugar in water, powdered drink in water;

- insoluble—sand in water, oil in water

2.) Identify physical and chemical changes of matter.

Examples:

- physical—chopping wood,

- chemical—burning wood

3.) Describe ways energy from the sun is used.

Examples: plant growth, light, heat

•  Identifying fossil fuels as a source of energy
4.) Define force and motion.

•  Identifying forces that change an object's position or motion
Examples: lifting, pushing, pulling

•  Identifying sources of friction
Examples: rubbing hands together, applying sandpaper to wood

•  Describing the force of gravity
5.) Identify the relationship of simple machines to compound machines.

Example: pencil sharpener composed of a wheel and axle, inclined plane, and wedge

6.) Identify structures and functions of the muscular and skeletal systems of the human body.

7.) Describe the life cycle of plants, including seed, seed germination, growth, and reproduction.

•  Describing the role of plants in a food chain
•  Identifying plant and animal cells
•  Describing how plants occupy space and use light, nutrients, water, and air
•  Classifying plants according to their features
Examples: evergreen or deciduous, flowering or nonflowering

•  Identifying helpful and harmful effects of plants
Examples:

- helpful—provide food, control erosion;

- harmful—cause allergic reactions, produce poisons

•  Identifying how bees pollinate flowers
•  Identifying photosynthesis as the method used by plants to produce food
8.) Identify how organisms are classified in the Animalia and Plantae kingdoms.

9.) Describe how fossils provide evidence of prehistoric plant life.

Example: plant fossils in coal or shale providing evidence of existence of prehistoric ferns

10.) Determine habitat conditions that support plant growth and survival.

Examples: deserts support cacti, wetlands support ferns and mosses

11.) Describe Earth's layers, including inner and outer cores, mantle, and crust.

•  Classifying rocks and minerals by characteristics, including streak, color, hardness, magnetism, luster, and texture
12.) Identify conditions that result in specific weather phenomena, including thunderstorms, tornadoes, and hurricanes.

•  Identifying cloud types associated with specific weather patterns
•  Identifying positive and negative effects of weather phenomena
Examples:

- positive—flooding deposits good soil when waters recede,

- negative—flooding kills crops

•  Identifying technology used to record and predict weather, including thermometers, barometers, rain gauges, anemometers, and satellites
•  Explaining symbols shown on a weather map
•  Organizing weather data into tables or charts
13.) Describe ways to sustain natural resources, including recycling, reusing, conserving, and protecting the environment.

•  Recognizing the impact of society on human health and environmental conditions
14.) Describe the position of Earth, the moon, and the sun during the course of a day or month.

•  Describing various forms of technology used in observing Earth and its moon
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