The teacher can use countless examples to show students how stress affects the meaning. Intonation Speech is like music in that it uses changes in pitch. Speakers can change the pitch of their voice, making it higher or lower at will. So speech has a melody called intonation. The two melodies are rising and falling.
Speakers use pitch to send various messages.
I am amazed. I was sure I put it there. Intonation is used to put certain words in the foreground. Speakers use pitch to give words stress. Low pitch is used to put things in the background, to treat something as old, to show anger, or as shared information.