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Third Grade Lesson Two

Skin & Hair

Outside building walls and roof

The surrounding outside material that encloses everything else. • Many colors and textures • Many sizes • Many shapes

Skeleton

Structural framework

The bones of the body are like posts and beams that hold up a building – a framework

Digestive System

Plumbing

We eat, drink, and remove waste from our body. Buildings have plumbing that brings in water and removes building waste.

Nervous System

Electricity

Our brain sends signals through our bo- telling it to do things like move muscles. A building has electrical wires that send through power, allowing us to use electrical appliances, light rooms, etc.

Respiratory System

Heat and Air Conditioning

We breathe in air with our lungs, which the heart then circulates through our body, and then exhale the used air. A building takes in air, heats it, cools it and blows it into rooms. Then “old” air is returned to the furnace to be cleansed.

Human Body

Comparison Chart #1

Building

Functional Comparison

Page 231

3 Grade

Lesson 2

FIRST GRAdE

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