State and Model the Objective
Tell the children they will dunk and plunk things in the tank while they read and write words that end in –nk. Make a list of words ending in –nk: plink, plunk, sink, sank, sunk, dunk, chunk.

Literacy Activities
Dunk a hunk into a tank

• Show the children a tank or a picture of a tank and a bowl of water to use as a pretend tank.
• Tear objects into hunks and chunks.
• Plunk the hunks and chunks into the water and listen to the sound they make (e.g., plink, clunk, thunk, kerplunk).
• Have the children make a guess – Do you think it will sink? Do you think it will not sink? Wink if you think it will sink. Blink if you think it will not sink.
• Check to see if the hunks sunk or if they did not sink.
• Have the children write a sentence about what happened with each hunk. (e.g., “We dunked the hunk and it sank!” “We plunked the chunk and it did not sink.”)

More Practice
Phonological Awareness/Word Building:

• With word blending cards, have the children make new words by changing the vowel or the beginning consonant:
  • sank --> tank; clink --> plink; plunk --> clunk; dunk --> hunk; blink --> wink
  • clink --> clank --> clunk; plunk --> plink --> plank; sink --> sunk --> sank
• Read target words in texts 
• Engage the children in reading the text Plink Plunk Sunk together as a class/group.
• Read the text again fading support.
• Ask the children to look for words ending in –nk as you read the text together.
• Have the children make a list of the –nk words in the text.

Write about the activity using target words/patterns

• Give each child a whiteboard and have them write words from dictation, changing one or two letters each time to make a new word: crank, clank, blank, bank, sank, sink, slink, clink, plink, plunk, plank, thank
• Give each child a paper and pencil and let them write about what they did with hunks and chunks. Have them include some of these words: hunk, chunk, sink, sank, sunk, plunk, dunk, wink, or blink.