We answer teachers with respect. 'Yes, thank you' sounds polite and kind. 'Yeah' is too casual for teachers.

We greet adults differently than friends. 'Good morning' sounds polite and respectful. We use formal words with principals.

This tests formal requests in the library. 'Could you please' sounds very polite. 'Gimme' and 'Now!' sound too bossy.

This tests polite language with new students. 'Would you like to' sounds more polite than 'Wanna.' Being polite helps make friends.

This tests formal language with teachers. 'May I please' sounds more polite than 'Can I.' We use fancy words with teachers.

This tests CCSS.L.2.3.a (comparing formal and informal uses of English). Formal English is language we use in school (especially with teachers and in classroom), when meeting new people, and when talking to adults we don't know well. It uses complete words (cannot instead of can't, want to instead of wanna), polite phrases (please, thank you, excuse me, may I), and respectful tone. Examples of formal: "Hello," "Good morning," "Yes, please," "May I please use the restroom?" "That's interesting." Informal English is language we use with friends and family we know well, at recess, and in casual situations. It uses contractions (can't, wanna, gonna), casual words (yeah, cool, hey, awesome), and relaxed tone. Examples of informal: "Hey!" "Yeah!" "Wanna play?" "Can I go?" "That's so cool!" Both formal and informal are correct - we just use them in different situations. Using formal language with teachers shows respect; using informal with friends shows comfort and friendliness. Good communicators naturally switch between formal and informal depending on who they're talking to and where they are. Choice A is correct because it uses formal language like "May I please" which is appropriate in class with a teacher, showing understanding that we adjust our language based on the situation and who we're talking to. Choice D shows confusion about formality by using very informal "Hey, I gotta go now!" which doesn't match the classroom context. Second graders sometimes think informal is okay everywhere, not understanding why they need to use "May I" with a teacher. To help students: Teach key contrasts: Greetings (Hey/Hi vs Hello/Good morning), Yes/No (Yeah/Nope vs Yes/No), Requests (Can I vs May I please), Want to (Wanna vs Want to/Would like to), Going to (Gonna vs Going to/Am going to). Situation cards: Give scenarios ("talking to principal," "playing with friend at recess") and students identify formal or informal.

This tests CCSS.L.2.3.a (comparing formal and informal uses of English). Formal English is language we use in school (especially with teachers and in classroom), when meeting new people, and when talking to adults we don't know well; it uses complete words (cannot instead of can't, want to instead of wanna), polite phrases (please, thank you, excuse me, may I), and respectful tone, with examples like 'Hello,' 'Good morning,' 'Yes, please,' 'May I please use the restroom?' 'That's interesting.' Informal English is language we use with friends and family we know well, at recess, and in casual situations; it uses contractions (can't, wanna, gonna), casual words (yeah, cool, hey, awesome), and relaxed tone, with examples like 'Hey!' 'Yeah!' 'Wanna play?' 'Can I go?' 'That's so cool!' Both formal and informal are correct - we just use them in different situations; using formal language with teachers shows respect, while using informal with friends shows comfort and friendliness, and good communicators naturally switch between formal and informal depending on who they're talking to and where they are. Choice B is correct because it identifies 'Yes, thank you' as showing formal English, which is appropriate for speaking to the librarian, an unfamiliar adult in a school setting, demonstrating understanding of adjusting language based on context. Choice A shows confusion about formality, claiming 'Yeah!' is formal; second graders sometimes think informal is always wrong, don't understand why they need to use polite phrases, or think they're the same. To help students, create a comparison chart: FORMAL (When: With teacher, principal, adults; In classroom; Meeting new people) (Examples: Hello, Good morning, Yes please, No thank you, May I please, Excuse me, I would like, I am going to) | INFORMAL (When: With friends, family; At recess, home; Casual time) (Examples: Hey, Hi, Yeah, Nope, Can I, Wanna, Gonna, See ya). Role play: Practice switching - 'How would you ask your teacher?' then 'How would you ask your friend?' Same message, different formality. Emphasize context: Not that one is right and one is wrong - both are correct in their situations; model by switching language appropriately, and explain purpose: Formal shows respect and politeness, informal shows comfort and friendliness.

This tests formal greetings with adults. We use polite words with new adults. "Hello. Nice to meet you" shows respect to the librarian.

This tests understanding why we change language. We use formal words to show respect at school. We use casual words with friends because it's friendly.

This tests comparing formal and informal greetings. "Good morning, Ms. Lee" is more formal. It uses a polite greeting instead of casual "Hey!"