Learn Polish: Ta nowa gazeta jest bardzo ciekawa. - This new newspaper is very interesting.

In Polish, adjectives change their endings to match the gender of the noun they describe. Because gazeta (newspaper) is a feminine noun (which you can usually guess because it ends in -a), the adjectives nowa (new) and ciekawa (interesting) must also take the feminine ending, which is -a.

Why use ta for "this" instead of ten or to?

Just like adjectives, demonstrative words like "this" have to match the gender of the noun they point to. Ten is for masculine nouns, to is for neuter nouns, and ta is for feminine nouns. Since gazeta is feminine, we must use ta.

Does the word bardzo change its ending to match the feminine noun?

No. Bardzo (very) is an adverb, not an adjective. Adverbs describe verbs or other describing words, and they never change their form. It will always be bardzo, no matter if the noun in the sentence is masculine, feminine, or neuter.

Could I say Ta gazeta jest nowa i bardzo ciekawa?