Central Board Of Secondary Education [CBSE] — Class 7, Science- Chapter 15 - Light

I happened to be tutoring a year 7 child science chapter light. Would like to bring into your every paragraph ends with a question like what do this experiment suggest? The experiment is given but what happens is not explained.

shouldn't the book be providing clear answers to the child. In an ideal world the teacher would have done the experiment and the child would have learnt from it.. but let's be practical, and where will the child refer, if he has a doubt?

Requesting to kindly look into the structure of the lesson Light (chapter 15, page 174) and make it more clear and child friendly.