You can read the words now. This room is about what happens when words stand together. A sentence is not any group of words and it is not a long group of words — it is a whole thought, with somebody in it and something happening. It opens with a capital and closes with a mark that tells you how to say it. Five tabs — cards for the parts, hints with the three end marks on one page, a quiz that asks you to tell a whole thought from half of one, and a workshop where you sort sentences from pieces, build one in order, label its parts and say why the big red dog is not a sentence.
Here are four words about a dog. Somebody is named. Read them and stop — you are still waiting to hear what happened.
A sentence needs TWO parts: somebody named, and something they do or are. It opens with a capital and closes with a mark. Four words can be a piece and two words can be a whole thought — count the parts, not the words.
Two things people get wrong
⚠️People often think…
A longer group of words is more likely to be a sentence.
“In the tall green tree by the old house” is eight words and names nobody doing anything — it only says where. “Birds fly.” is two words and is complete. Length is not the test. Ask who or what, then ask what they do.
Count the parts, not the words.
⚠️People often think…
Putting a question mark on it makes it a question, so it is a sentence.
A mark only tells the reader how to say it. “Where the dog?” still has no telling part. Add one and it works: “Where is the dog?” Punctuation cannot rescue a piece — only the missing part can.
A mark cannot add a missing part.
Who or what, what they do, capital, mark
1Watch one
Turn “ran down the street” into a whole sentence.
Ask who or what. There is no answer — nobody is named. That is the missing part.
Ask what they do. Answer: ran down the street. That part is already there.
Add a naming part at the front: The big red dog ran down the street.
Capital on the first word, period at the end. Now nothing is left waiting.
2Do one with me
Fill in what each sentence is missing.
“The big red dog” is missing the
“Ran down the street” is missing the
Every sentence ends with an
💬One sentence, then you move on
Why can four words be a piece when two words can be a whole sentence?
3Try one
“Where the dog?” is a piece. Write the ONE word that turns it into a whole question.
I want a hint first
It is two letters long, and you met it on the card about is and are.
Where this goes
Where this lives
A note you leave on the table, a text you send, a label you write on a box — every one of them needs somebody in it and something happening, or the person reading it has to guess.
What this feeds
Next room: who is in the story, where it happens, and what they do.
Say a whole sentence out loud about something in this room.
One card at a time — tap “Show me” to check yourself, then Next. Start at Foundation; when those feel easy, climb.
Helpful Hints
🧭 The unit in one line
A sentence names somebody → says what they do → starts with a capital → and ends with a mark. Take away any one of those and it is not a sentence yet.
Who + what they do. Capital at the front, mark at the end.
🔑 The one idea
Length is not what makes a sentence. “We ran.” is a whole thought in two words. “In the tall green tree by the old house” is eight words and still only half a thought — nobody is doing anything.
⚠️ Traps to avoid
“The big red dog” is not a sentence. It names somebody but never says what they did.
“Ran down the street” is not a sentence either. Something happens, but nobody is doing it.
More words does not mean more sentence. Count the parts, not the words.
A question still needs both parts. “Where the dog?” is missing its telling part — “Where is the dog?”
📐 The end marks — the chart
Mark
Use it when
Example
.
you are telling something
The dog ran.
?
you are asking something
Where is the dog?
!
you are saying it with force
The dog ran!
🎯 How you will be asked
“Is this a sentence? Say why or why not.”
“Underline the naming part. Circle the telling part.”
“Put the right mark at the end.”
“Fix this sentence.” — a missing capital, or a missing end mark
“Add words to make this a whole thought.”
✅ Before the test, can you…
Say the two parts every sentence needs?
Look at “The big red dog” and say what is missing?
Choose between a period and a question mark without being told?
Write a whole sentence in three words?
Explain why a long group of words can still not be a sentence?
Pick your level
Look back at anything you missed — the hint that appeared is exactly what to reread tonight.
How sure did you feel?
Workshop
Work like a writer who finishes what they start: sort whole thoughts from pieces, put a sentence together in order, label its parts, then say why four words about a dog are still not a sentence.
Your practice never leaves this device. There is no account and no sign-in. Your work is saved in this browser only, and you can erase it whenever you want.
Your practice record — saved on this device
This is your record of the module on screen — it stays here and goes nowhere. Independent means you got it right on the first tap; supported means you got it after the explain-and-retry, or marked ‘I had it’ on a revealed answer. Both count, and neither is a grade. If your teacher asks, copy the row or show them this screen.
Date
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Topic
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Level
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Independent
0 of 0
Supported
0 of 0
Hints used
0
Cards studied
0
Lab
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Traps met
0
Explained in own words
0
Confidence
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The answer key is for a teacher: it prints only from here, for the unit on screen. Print the study packet prints the study pages and a blank quiz — never the answers.