1.Wake Up to Weather 2.Glaciers 3.Natures Water Cycle 4.Mapping the Earth 5.Astronauts and Space Travel 6.Meteors:A Streak of Light 7.Snake Walk 8.Why Fish Like School 9.Surprising Seahorses 10.Look Up to Giraffes 11.Surprising Uses for Plants 12.Danger! Carnivorous Plants 13.Wheels on the Go 14.Make a Kite 15.Real Robots 16.Heat and Eat 17.Electricity Made Simple 18.Static Electricity
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Real Robots
Page 2
What does a robot do? A robot is a machine that does a job.
Page 3
Some robots are built like humans. They have two arms， two legs， and a head.
Page 4
Many toy robots are built that way.
Page 5
Most robots don’t look at all like people or animals. Some robots roll around and clean the floor. They are built low to go under tables and chairs.
Page 6
Other robots stay in one place. They can do one task over and over.
Page 7
A robot might cut the grass.
Page 8
Or it might explore Mars! Each robot only has the parts it needs. If it doesn’t need legs， it doesn’t have them!
Page 9
This rescue robot has arms and legs. It needs to walk up and down stairs. It needs to open doors. It needs to use fire extinguishers.
Page 10
Some robots can go into space. Space robots work with astronauts and use astronauts’ tools.
Page 11
Some helper robots look like friendly humans so people will want to have them around.
What else could a robot do?
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