White dessin -Similar but certainly different

Create the ability to see things that are similar but different.
We will carefully observe the difference between the two. And how should we draw this white thing with a black pencil?
What kind of changes will occur in the daily lives of both young children and adults after facing these two things?

I would like to share with you the basics of sketching, and together we will approach the essence of sketching.

What to prepare
white balloon
white egg
3 pencils (2H, H, HB)
eraser