I left my kids, son (6) and daughter (2 1/2) in the garden on their own for 5 minutes while I got their lunch ready. In that short time they soaked each other with water, poured sand over each other heads and broke a toy.
There are kids my son's age and maybe a bit older than my daughter running around the area (parents from council housing don't check on them all afternoon) and they seem to be OK.
What have I done wrong with mine?