A bill, sponsored by state Senator Steven Panagiotakos of Lowell, is pushing for mandatory helmets for children, 12 and under, while sledding. This is being spurred on primarily by press coverage of two teenaged girls who have died in upstate New York in the past couple of weeks. In both cases, the sledders were sledding in locations that were marked for no sledding and one of the two trespassed in order to go sledding where she struck a tree on the hill of a golf course. But won't we all think of the children?