Educational worksheet focusing on medial sounds i and o, designed for early readers to practice word recognition and sentence completion.

Problem Description:

The task involves identifying words with the medial sounds "i" and "o" in the provided lists. The goal is to:

1. Identify words containing the medial sound "i".
2. Identify words containing the medial sound "o".
3. Use these identified words to complete sentences.

---

Step-by-Step Solution:

#### Part 1: Medial Sound "i"
The first part of the task asks us to identify words with the medial sound "i" from the given list:
- sat, put, sit, not, lot, lit, hit, set, tin, tip

We need to focus on the middle vowel sound in each word:
- sat: /æ/ (no "i")
- put: /ʊ/ (no "i")
- sit: /ɪ/ (contains "i")
- not: /ɒ/ (no "i")
- lot: /ɒ/ (no "i")
- lit: /ɪ/ (contains "i")
- hit: /ɪ/ (contains "i")
- set: /ɛ/ (no "i")
- tin: /ɪ/ (contains "i")
- tip: /ɪ/ (contains "i")

Words with the medial sound "i":
- sit, lit, hit, tin, tip

#### Part 2: Completing the Sentence
The task asks us to find the word that does not contain the medial sound "i" and use it to complete the sentence:
- mat, win, pat, fat, cat

Checking each word:
- mat: /æ/ (no "i")
- win: /ɪ/ (contains "i")
- pat: /æ/ (no "i")
- fat: /æ/ (no "i")
- cat: /æ/ (no "i")

The word "win" contains the medial sound "i". The other words do not. Therefore, we use one of the words without "i" to complete the sentence:
- "I want to _______ the race."

Using "win" (since it fits grammatically):
- I want to win the race.

---

#### Part 3: Medial Sound "o"
The second part of the task asks us to identify words with the medial sound "o" from the given list:
- get, got, hit, lot, pat, pin, mug, pot, not, dog

We need to focus on the middle vowel sound in each word:
- get: /ɛ/ (no "o")
- got: /ɒ/ (contains "o")
- hit: /ɪ/ (no "o")
- lot: /ɒ/ (contains "o")
- pat: /æ/ (no "o")
- pin: /ɪ/ (no "o")
- mug: /ʌ/ (no "o")
- pot: /ɒ/ (contains "o")
- not: /ɒ/ (contains "o")
- dog: /ɒ/ (contains "o")

Words with the medial sound "o":
- got, lot, pot, not, dog

#### Part 4: Completing the Sentence
The task asks us to find the word that does not contain the medial sound "o" and use it to complete the sentence:
- tug, hug, lot, mug, rug

Checking each word:
- tug: /ʌ/ (no "o")
- hug: /ʌ/ (no "o")
- lot: /ɒ/ (contains "o")
- mug: /ʌ/ (no "o")
- rug: /ʌ/ (no "o")

The word "lot" contains the medial sound "o". The other words do not. Therefore, we use one of the words without "o" to complete the sentence:
- "Jan has a _______ of pens."

Using "lot" (since it fits grammatically):
- Jan has a lot of pens.

---

Final Answers:

1. Words with the medial sound "i": sit, lit, hit, tin, tip
2. Sentence completion: I want to win the race.
3. Words with the medial sound "o": got, lot, pot, not, dog
4. Sentence completion: Jan has a lot of pens.

Boxed Final Answer:
$$
\boxed{\text{I want to win the race. Jan has a lot of pens.}}
$$