Texas TEKS 2.8.A
The Standard
demonstrate and explain that sound is made by vibrating matter and that vibrations can be caused by a variety of means, including sound
Texas Essential Knowledge and Skills for Science
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students make objects vibrate by plucking, striking, rubbing, blowing, or playing a nearby sound. They identify the vibrating object as the source of the sound they hear.
What Mastery Looks Like
- A student can produce a sound, point to the part that vibrates, and describe how the vibration started. They can also show that sound from a speaker makes nearby matter vibrate.
Common Misconceptions
- Students may think an object is not vibrating when its movement is too small or fast to see. They may confuse the action that starts a vibration with the vibration itself. Some think sound cannot make another object vibrate.
How to Assess It
- Exit ticket: Draw and label an object making sound, then explain what vibrates and how a nearby sound could make another object vibrate.
Lesson moves
Ways to Teach It
Set up stations where students pluck rubber bands, strike a ruler, tap a drum, and observe rice moving near a speaker.
Ask students to explain why a ruler hanging over a desk edge makes sound after being plucked.
Play vibration charades where students match action cards, such as pluck or strike, to objects that can make sound.
Examine a speaker, doorbell, or musical instrument and identify the vibrating part that produces its sound.
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Printable 2.8.A Worksheet
A ready-to-print activity worksheet aligned to 2.8.A, with an answer key for the teacher on its own page. No account needed.
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Related Standards
- 2.8.B
explain how different levels of sound are used in everyday life such as a whisper in a classroom or a fire alarm; and
- 5.8.B
demonstrate that electrical energy in complete circuits can be transformed into motion, light, sound, or thermal energy and identify the requirements for a func...
- 4.8.A
investigate and identify the transfer of energy by objects in motion, waves in water, and sound;
- 3.8.A
identify everyday examples of energy, including light, sound, thermal, and mechanical; and
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