Reflection about Cup-a-Phone

I'm a caring person because in the morning in our UOI lesson, we made a cup-a-phone. We learnt how to make it. My partner was Kalista. I helped her to make a cup-a-phone. After that I used something to make a hole as big as the string. Then Kalista waited so long for me and then I was done.

Then, I and Kalista tested then there was a sound wave travelled by the string one second so it can be heard.

I'm a thinker, too. I thinked about the hole size and how to cut it, the straigtness and tightness of the string. Besides that, I gave Kalista some advices and the plan to make it. =) 0=)