Quantum Mechanics is such a wonderful field of study which could bring us to the understanding of our nature ( or close to it). I encourage you to keep an eye on it’s unfolding and ….maybe you consider pursuing a career in this direction! ♥
I bring to your attention an article about new research shedding more light on the realm of material existence ( having implications on the materialistic view of Universe which is still dominant nowadays)
A recent experiment by researchers at Australia National University into the quantum behavior of particles seems to suggest that reality appears not to exist until it is actually measured

“The atoms did not travel from A to B. It was only when they were measured at the end of the journey that their wave-like or particle-like behavior was brought into existence. Measurement is everything.”
“If one chooses to believe that the atom really did take a particular path or paths then one has to accept that a future measurement is affecting the atom’s past”, said Truscott.
What are the implications of this discovery?
Here, reality means the material world as we see it. If it doesn’t exist without an Observer, it means that this material Reality is out there because we (humans) exist. In the absence of the Observer, there might be something else…Can you speculate on this idea?
The mystery of it , can be intriguing even for 5, 6 or 7 grades like you!
You might argue that you see physical (solid) things around you..but later, when you’ll learn about vibrations, energy, etc, you’ll understand perhaps that these things are not exactly as you thought and that “solid” is a label as any other label humans use to name the material world in order to make sense of it by talking about it, sharing ideas, etc.
You can argue that what applies to the quantum level, might not be verified at macroscopic level.
Let’s research about all these things and open here a discussion thread!