kodomo no yousu wo kakuninsimasita.

の links two nouns together. Here, 子供の様子 means something like the child’s state / condition / how the child was doing.

You can think of it as:

• 子供 = child / children
• 様子 = condition, state, appearance, how someone seems
• 子供の様子 = the child’s condition / how the child seemed

So の is showing that 様子 belongs to or relates to 子供.

様子 is a very common word, but it is a little broader than any one English word.

In this sentence, it means something like:

• condition
• state
• how someone was doing
• how someone seemed

For a child, 子供の様子 could refer to:

• their health
• their behavior
• their mood
• how they looked
• whether anything seemed unusual

So 様子 is not just physical appearance. It often means the overall situation or condition someone is in.

を marks the direct object of the verb.

The verb here is 確認しました, meaning checked / confirmed.
What was checked? 子供の様子.

So:

• 子供の様子 = the child’s condition
• を = marks it as the thing being checked
• 確認しました = checked / confirmed

That is why を is used.

確認しました is the polite past form of 確認する, which means:

• to confirm
• to check
• to make sure of something

In many situations, 確認する sounds a little more formal or deliberate than just 見る (to look) or チェックする (to check).

So 子供の様子を確認しました suggests:

• someone checked on the child carefully
• someone verified the child’s condition
• someone made sure how the child was doing

It often sounds natural in reports, caregiving, medical settings, school settings, or polite conversation.

Because the sentence is reporting a completed action: the checking already happened.

• 確認します = will check / check (non-past)
• 確認しました = checked / did confirm

Japanese past tense often works like the English past tense here. It tells us the action was completed.

The subject is omitted, which is very common in Japanese.

The sentence does not explicitly say:

• I checked
• we checked
• the teacher checked
• the parent checked

Japanese often leaves out information that is understood from context. So depending on the situation, the subject could be:

• I
• we
• the staff
• the teacher
• someone else already known in the conversation

This is one of the biggest differences from English: Japanese does not need to state the subject every time.

Because this sentence is simply focusing on the action confirmed/checked, and the subject or topic is understood from context.

If you wanted to include a topic or subject, you could say things like:

• 私は子供の様子を確認しました。 = I checked the child’s condition.
• 先生が子供の様子を確認しました。 = The teacher checked the child’s condition.

But in natural Japanese, if it is already clear who did it, those words are often omitted.

So the sentence without は or が is completely normal.

It can be either singular or plural, depending on context.

Japanese nouns usually do not change form for singular vs. plural the way English nouns do.

So 子供 can mean:

• a child
• children

In this sentence, context tells you which one is meant. If the situation is about one specific child, it means the child. If it is about several children, it can mean the children.

Both 子供 and 子ども are common.

You may see:

• 子供
• 子ども
• less often 子供たち for children

Many textbooks and modern writing styles use 子ども because it is very common and visually easy to read.
子供 is also extremely common and natural.

So in this sentence, 子供の様子を確認しました is perfectly normal.

Good question. Both can be translated as I checked the child’s condition in some contexts, but the nuance is different.

• 見ました = looked at / saw
• 確認しました = checked / confirmed / made sure

So:

• 子供の様子を見ました can sound more like I looked at how the child was doing
• 子供の様子を確認しました sounds more like I checked and confirmed the child’s condition

確認しました is a bit more purposeful and formal.

No, standard Japanese normally does not use spaces between words.

The usual writing would be:

子供の様子を確認しました。

Spaces are often added in teaching materials to help beginners see the word boundaries more clearly. That is probably why you saw:

子供　の　様子　を　確認しました。

So the spaced version is for learning, but the normal written sentence has no spaces.