You Will Need:
A bucket, or bag for holding collections of stones, Large paper, markers, go for a walk
While walking encourage your child to find the smoothest stone he can find; the smallest, largest, whitest, wettest, speckled, that are shaped like a heart, etc. When you get home, make a chart of what you have found. Make labels for each rock that describe them; rough, mossy, cold, etc. Let your child copy what you have written. Look in encyclopedias or the internet to see if you can find the name of the types of rocks you found.
This is a fun activity at a beach or near a creek but be sure to tell your child to stay in your sight at all times.