What is the rhyme scheme of the following poem?

He sat upon his brand new bike
waiting for his best friend mike
He couldn't wait to ride to school
others would say his bike is cool.

1. a a b b
2. a b a b
3. a b c d
4. a a b a

I think its 1 aabb am I correct?

Yes, 1.

Yes, you are correct. The rhyme scheme of the poem is 1. a a b b (aabb).

Yes, you are correct! The rhyme scheme of the poem you provided is 1. a a b b. To determine the rhyme scheme of a poem, you need to look at the end words of each line and assign a letter to each unique sound. Lines that have the same sound at the end are assigned the same letter. In this case, the first two lines end with the words "bike" and "mike," which both have the same sound, so they are assigned the letter "a." The next two lines end with the words "school" and "cool," which also have the same sound, so they are assigned the letter "b." Therefore, the rhyme scheme is a a b b. Well done!