Hunt for some smooth hammer-stones. If you can find one with pits on either side, try both kinds and find out which one works the better.
See if you can find a good stone for a knife.
Strike the edge to see if it crumbles.
Find one that will not crumble.
Do you know whether stones have names?
What stones have you that you would like named?
[XX.]
THINGS TO THINK ABOUT
Have you ever seen wild animals protect their little ones?
How do they do it?