WOOHYUN: I'll tell you about my Tuesday. On Tuesday, I went to school because the vacation was over. And I studied math at first and second period.

CORRECT: I'll tell you about my Tuesday. Last Tuesday. I went to school because the vacation was over. And I studied Math on the first and second period.

>>Proper nouns (subjects) begin with a capital letter.

WOOHYUN: It was fun because It is about problem solution. I like that.

CORRECT: It was fun because it was about problem solution. I liked it.

>>Be consistent with your verb tense. Only the first word of a sentence starts with a capital letter. 'that' is used to mean something that is not near you. It is better to use the pronoun 'it' to mean the thing that has already been talked about.

WOOHYUN: The next class is Korean. I (our class) studied about short play. Our teacher said, we will gonna perform a short play. I was so excited about that.

CORRECT: The next class was Korean. I (our class) studied about short play. Our teacher said we will/are going to?perform a short play. I was so excited about that.

>>'gonna' is a short form for 'going to'. This phrase is preceded by 'be verb' (am going to, is going to, are going to).?You can either?use?'will + verb' or?'be verb + going to + verb'.??

WOOHYUN: The next class is mt? favorite. Can you guess? It's foot(base)ball!! We divided into two teams, and we played. And the greatest thing of all is we won!! I was very happy we won. Being so excited, I couldn't concentrate the next lesson.

CORRECT: The next class was my favorite. Can you guess it? It's foot(base)ball!! We divided into two teams and we played. And, the greatest thing of all was?we won!! I was very happy we won. Being so excited, I couldn't concentrate?on the next lesson.?

>>Be mindful of the?correct verb tenses you use.?Don't forget to use prepositions and?write the correct spelling of words.?

WOOHYUN: Now, the lessons are over.?And we went to school cafeteria to eat our lunch. It was delicious. School foods are always delicious. And?I?(and my classmates of course)?clean the class, and I went to my house. Today was a greatest day ever!!

CORRECT:?Now, the lessons are over. And we went to?the school cafeteria to eat our lunch. It was delicious. School food are always delicious.??And I (and my classmates of course) cleaned the classroom and I went to my house. Today was the greatest day ever!!

>>Use definite articles for definite nouns. 'food', in general form, is not written with 's' at the end. Be mindful of the verb tenses. For superlative form of adjectives, 'the' is written before the adjective.