ההערכה הראשונית בודקת את הניידות.

It is the Hebrew definite article, meaning the.

So:

• הערכה = assessment / evaluation
• ההערכה = the assessment
• ראשונית = initial / preliminary
• הראשונית = the initial
• ניידות = mobility
• הניידות = the mobility

In Hebrew, the is usually attached directly to the beginning of the word.

Because in Hebrew, an adjective agrees with the noun it describes in definiteness.

Since ההערכה means the assessment, the adjective must also be definite:

• ההערכה הראשונית = the initial assessment

If the noun were indefinite, the adjective would also be indefinite:

• הערכה ראשונית = an initial assessment

This is very different from English, where only the noun phrase gets the once.

Because ראשונית and ראשונה do not mean exactly the same thing.

• ראשונית = initial / preliminary / primary
• ראשונה = first (as an ordinal number)

So:

• ההערכה הראשונית = the initial assessment
• ההערכה הראשונה = the first assessment

In many contexts, initial is the better match, not first.

Because the subject, ההערכה הראשונית, is a feminine singular noun phrase.

Hebrew present-tense verbs agree with the subject in gender and number.

• הערכה is feminine singular
• so the verb is בודקת = feminine singular

Compare:

• ההערכה בודקת = the assessment checks
• הבדיקה בודקת = the test/check examines
• הדו"ח בודק = the report checks / the report examines (masculine singular)

Yes. בודקת is the feminine singular present form of לבדוק (to check / to examine).

Depending on context, Hebrew present tense can correspond to:

• checks
• is checking
• sometimes even does check

So בודקת could be understood as:

• checks
• is checking / examining

English chooses between simple and continuous more sharply than Hebrew does.

את is the marker of a definite direct object. It usually is not translated into English.

So in:

• בודקת את הניידות

the word את tells you that הניידות is the direct object of the verb.

A very literal breakdown would be:

• בודקת = checks
• את = [definite direct object marker]
• הניידות = the mobility

So the whole phrase means:

• checks the mobility

Yes, it can. In unpointed Hebrew, את can be either:

1. the direct object marker, or
2. you (feminine singular)

But here it is definitely the direct object marker, because it comes right before הניידות and introduces the object of the verb.

So in this sentence, it does not mean you.

Here, ניידות is not plural. It is a singular abstract noun meaning mobility.

That ending can be confusing, because -ות is often a feminine plural ending, but some singular abstract nouns also have this shape.

So:

• הניידות here means the mobility, not the mobilities

This is a common thing to watch out for in Hebrew vocabulary.

Because English and Hebrew do not always use definiteness in the same way, especially with abstract nouns.

Hebrew may say הניידות when referring to a specific quality being tested, while English often sounds more natural with just:

• mobility

So although the Hebrew literally has the mobility, a natural English translation may simply be:

• The initial assessment checks mobility or
• The initial assessment assesses mobility

The sentence uses a very common Hebrew order:

subject + verb + object

• ההערכה הראשונית = the initial assessment
• בודקת = checks
• את הניידות = the mobility

So the structure is straightforwardly:

• The initial assessment checks the mobility

Hebrew word order is somewhat flexible, but this is one of the most standard patterns.

Here are the main forms a learner would usually look up:

• הערכה = assessment / evaluation
• ראשוני = initial / primary / preliminary
  
  • feminine singular form here: ראשונית
• לבדוק = to check / to examine
  • present feminine singular form here: בודקת
• ניידות = mobility

When looking up verbs, Hebrew dictionaries usually list the infinitive, so for בודקת you would look for לבדוק.

Yes. הערכה can have more than one meaning depending on context, including:

• assessment
• evaluation
• appreciation
• esteem

In this sentence, because it is followed by בודקת את הניידות, the meaning is clearly something like:

• assessment
• evaluation

So context tells you which sense is intended.