You can only tell that time passes because other things change
Time People say that time flies. They ask where the time went. They say that time marches …
Science
Plants are one of the five main groups of living things
Plants They grow on mountains and in deserts. They grow in freshwater lakes and streams. They …
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People use sound for things other than talking and making music
Sound Your alarm clock goes off with a loud ring or buzz. You sing to yourself in the show…
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Space shuttles and artificial satellites also orbit Earth
Orbit Astronauts on a space shuttle mission can see planet Earth below. They see different…
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Numbers
Numbers Numbers They can be positive or negative, odd or even. They can be whole or in par…
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Molecules
Molecules Molecules Did you ever wonder what things are made of? Some objects are hard. So…
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Microscopic Life
Microscopic Life Microscopic Life There is a world all around you that you cannot see. Bil…
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Matter
Matter Matter You cannot drink a steak or nail chunks of air together. You cannot chew mil…
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Light
Light Light When you get up in the morning, sunlight makes your room bright. When the Sun s…
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Hydrogen
Hydrogen Hydrogen Every day the Sun’s rays provide light that allows us to see. This light…
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