I have worked out compostion of rhythm in Grade IV Theory and showed it to my teacher. I imagined myself as composing a song and created them. But my teacher wasn't happy at all!

She says I have repeated so many patterns and so it is not interesting. She says I should not think as if I am going to write a song! (If you write a song, you repeat the rhythm pattern twice or thrice so that you get an identity to the piece right?)

She says I have to show the examiner how many ways I can manipulate the rhythm with different patterns of notes. And that at the same time, it should not look too complicated.

I don't know what to do? Should I repeat the rhythm and make it look a nice hummable bit or juggle with note-values?

Someone help please...
Thanks in advace!

I wouldn't try to be too clever really.
Sometimes keeping it fairly simple works best.
Too many different ideas inside 4 bars can be really bitty... it is not a test of seeing how many ways you can make up the bars to the correct note value.
Repeating one bar (or at least a particular rhythmic feature) holds it together.

That's a problem. 4 bars isn't enough to do much.
Beethoven was good at this but he got exempted his grade 5 theory for some reason. I may have the key wrong but the trio in Sym 2 scherzo (haven't the score to hand but its in 6/8 or 3/8.) this is meant to be 6/8 the 'de' at the front are semiquavers

de|F#- - G - - |A.G.F#.E - F#|G - - A - - |F#.G.E.D - |

As a phrase and answering phrase it's so simple.

With the composing a rhythm bit of theory, the idea is to show the examiner that you can compose an interesting but musical-grammatically correct 4-bar phrase.

At grade 5 you get the opportunity to create a 'song' where you get words and have to put them to music.

Although, unlike many of the great songwriters, you have to do it in silence without an instrument. It's all about making it technically good, and adding a small bit of interest.

Thanks everyone for your replies!

Sbhoa, you are always there to help and guide...I really admire your enthusiasm!