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
The bones of the body are like posts and beams that hold up a building – a framework
We eat, drink, and remove waste from our body. Buildings have plumbing that brings in water and removes building waste.
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.
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.
Comparison Chart #1