Prepare to Read

Learn Key Vocabulary

Rate and Study the Words Rate how well you know each word. Then:

  • 1. Pronounce the word. Say it aloud several times. Spell it.

  • 2. Study the example.

  • 3. Tell more about the word.

  • 4. Practice it. Make the word your own.

Rating Scale

  • 1 = I have never seen this word before.

  • 2 = I am not sure of the word’s meaning.

  • 3 = I know this word and can teach the word’s meaning to someone else.

Key Words
attach (u-tach) verb page 14Photograph of a girl putting a poster on a wallWhen you attach something, you stick it to something else. Use tape to attach a poster to your wall.
Related Word: attachment		captive (kap-tiv) adjective page 17
Photograph of a raccoon inside an animal cage
A captive animal is not free to leave. Animals in cages are captive.
Related Word: captivity		challenge (chal-unj) noun page 18
Photograph of runners coming across a finish line
A challenge is something that is hard to do. It is a challenge to run a race.
Related Words: challenger, challenging
experiment(ik-sper-i-ment) verb page 19
Photograph of two people with goggles working with beakers
When you experiment, you try an idea. You can experiment in science class.
Related Word: experimentation		invention (in-ven-chun) noun page 14
Photograph of a cell phone
An invention is something that is made for the first time. The telephone is an invention to let people talk.
Base Word: invent		record (ri-kord) verb page 14
Photograph of a singer in a sound studio
When you record, you make a copy. The singer records her song in a studio.
scientist (sī-un-tist) noun page 15
Photograph of an adult looking through a powerful microscope
A scientist studies things in nature. This scientist uses a microscope.
Base Word: science		test (test) verb page 16
Photograph of a child with a flashlight shining in the viewer's direction
When you test something, you try it. You should test your flashlight to see if the batteries work.		Practice the Words Make a Study Card for each Key Word. Then compare your cards with a partner.

record

What it means: to make a copy

Example: I record my favorite TV show.

Not an example: I watch a TV show.

Study Card