On and Off the Octagon

On and Off the Octagon
Target text


Associate the letter O with the short /o/ sound as in on, off, and ox.

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Lesson Plan

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Target Words:

  • on
  • off
  • octagon
  • octopus
  • olives
  • omelet
  • ostrich


  • Octagon
  • Word and picture cards
  • Octagon puzzle pieces 

The children will place pictures on an octagon as they practice saying the /o/ sound in words such as on, off, octagon, and ostrich.

Literacy Activities
Off the octagon

  • Place the picture cards on the octagon graphic and explain that an octagon is a shape with eight sides.
  • Tell the children that any words that do not start with /o/ will need to come off the octagon. 
  • Have the children decide whether each picture starts with the /o/ sound.
    • If the picture starts with the /o/ sound, have the children say, "On the octagon!" and leave the picture on the octagon.
    • If the picture does not start with the /o/ sound, have the children say, "Off the octagon!" and take the picture off the octagon.
  • Throughout the activity, emphasize the /o/ sound at the beginning of the words.
  • Repeat the game using word cards.
  • Have the children underline the letter O in the words, then help them read the words.

On the octagon

  • Print the puzzle piece and ostrich graphics, using a double-sided setting so that the paper has the puzzle pieces on one side and the ostrich on the other side.
  • Cut out the puzzle pieces and hide them around the room.
  • Tell the children that an ostrich is hiding somewhere and there are clues around the room to help find him.
  • Have the children find the puzzle pieces and place them on the octagon.
  • Let the children name each picture.
  • Point out that all the pictures begin with the letter O, which makes the /o/ sound.
  • Once the puzzle is assembled, tape the puzzle together and turn it over to discover where the ostrich is hiding.

More Practice
Identify, blend, and manipulate sounds

  • Have children identify the beginning, middle and ending sounds of words by tapping their head (beginning), shoulders (middle), and toes (end).
    • For example: cot = /c/ (tap head) + /o/ (tap shoulders) + /t/ (tap toes).
  • Point out that all of the words have the /o/ sound in the middle of the word.
    • pot = p + o + t
    • lot = l + o + t
    • hop = h + o + p

Write the target letter

  • Give the children an octagon and have them write the letter O on the octagon while saying the /o/ sound.


SEEL At Home

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Associate the letter O with the short /o/ sound as in on, off, and olive.


  • O and non-O pictures 
  • Octagon graphic

Activity: On the Octagon

  • Spread out the O and non-O picture cards on the table.
  • Help your child decide whether or not each picture begins with the letter O.
    • If the picture begins with the letter O, put it on the octagon.
    • If the picture does not begin with the letter O, discard it.
  • Emphasize that the letter O makes the /o/ sound
  • Have your child write the letter O on the octagon while saying the /o/ sound. 

O Picture Cards and Octagon




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1. CCSS.ELA-LITERACY.RF.K.1.D: Recognize and name all upper- and lowercase letters in the alphabet.
2. CCSS.ELA-LITERACY.RF.K.3.A: Demonstrate basic knowledge of one-to-one letter-sound correspondences by producing the primary sound or many of the most frequent sounds for each consonant.