PS.2.2.2

Use models to summarize the relationship between sound and how sounds are produced and detected by parts of the body that vibrate.

District Recommended Resources for 2nd Grade Science

Sound

Activity Pack

Sound Kit

Activity Packs available for purchase. Full kit rental options are also available. See your administrator.

Science Phenomena Resources

Other Phenomena Sites

Next Generation Science Standards YouTube Channel

Step 1: Lesson Standards & Learning Goals

NC K-12 Science Supporting Document Grade 2

Dimension 1:

SEP: Develop and Use Models:

Students use a model to represent the parts of the body that produce and detect vibrations.

Dimension 2:

CCC: Structure and Function

Dimension 3:

Disciplinary Core Ideas:

Sounds can make matter vibrate, and vibrating matter can make sound (A Framework for K-12 Science Education).

Sample Essential Questions

Vocabulary

How do humans create and detect sound?
How does the human ear work?
How do the larynx and vocal cords make sound?

detect
ear
ear canal
eardrum
inner ear
larynx
outer ear

produce
sound
sound waves
vibrate/vibrating
vibration
vocal cords
volume

Students will be able to...

Identify the parts of the body that produce and detect sound.
Summarize how the ears detect sound.
Summarize how the vocal cords produce sound.
Use models to explain how sound is produced and detected.

Students will know...

Sound waves are collected by the outer ear; funneled into the eardrum via the ear canal; eardrum vibrates causing tiny bones in the middle ear to vibrate; vibrations travel through the inner ear to the auditory nerve that translates it into a form that is understood by the brain.
Vocal cords produce sound when air passes over them making them vibrate; pitch and volume of the sound made can be changed by changing properties of the vocal cords such as length and space between them.
The human ear has three parts: the outer ear, the middle ear, and the inner ear. Each part has a different role in helping humans hear.
The larynx (voice box) is a hollow tube in the middle of the neck that helps a person to breathe and to make sounds. It also helps protect people from breathing in their food when they are eating.
Vocal cords are two thin bands of muscle that are stretched across the inside of the larynx. They produce sound when air passes over them making them vibrate. Pitch and volume of the sound made can be changed by changing properties of the vocal cords such as length and space between them.

Step 2: Assessment

Formative Assessments

Writing Prompts

Noisy Day: Write a story about a time when it was a very noisy day. What were some of the sounds you heard that day? How did the noise make your ears feel?
Listening Adventure: Close your eyes and listen carefully. Write about all the different sounds you can hear around you right now. How do you think these sounds are produced? How do your ears help you hear them?
Sound Journal - Keep a journal to draw diagrams and record notes throughout the unit.

Mini Projects and Investigations

Culminating Activity

Create a diagram or model showing how humans hear sound. The project should include a labeled diagram of the ear and the function of each part of the ear. An explanation of how sound travels from the outer ear to the brain should also be included. The labels and explanations should use specific content vocabulary. Students can use TinkerCad to develop a 3D print model. They may also use Canva, Adobe Illustrator, or Book Creator. (Teacher Note: Scaffolding may be necessary based on student needs. For example, some students may need a pre-printed diagram or a word bank.)

Step 3: Lesson Instructions