A Level Investigation Main Ideas

For my A Level investigation, I have two main ideas.

Firstly, one idea I have looks at power features and how our language changes when speaking to different ages/abilities, specifically in a dance school.
I plan to collect voice recordings of my dance teacher teaching an older, more advanced class, and then do the same but when she is teaching a younger, beginner class. I will then write transcripts of the classes and analyse them, looking for differences and similarities in my teacher's language when talking to the two classes. This may include certain terms she uses, changes in pitch and tone etc.
I have chosen this as a possible investigation because dancing is my main hobby and I also want to be a Primary School Teacher, so looking at how people adapt their speech to different ages of children in a setting which I am comfortable in really appeals to me.

Secondly, another idea I have involves looking at technology and pragmatics to analyse whether private texts and messages are often misinterpreted, and if they are, which features and techniques are used to ensure that they are received as they were meant to be received.
I plan to collect texts from a certain age group and gender (to minimise the variables) and look at where texts are misinterpreted, which features make them misunderstood, and which features people use to try and make sure they aren't misunderstood.
I have chosen this as a possible investigation as texts and how they differ from face-to-face conversations really interests me, and by doing this investigation I can fully explore this and possibly find ways to minimise misinterpretations in texts/messages.