By Zdenek Pouliotte at August 23 2019 07:38:26
The answer, of course, is YES they can. In my perfect world of mathematics education, no pre_school child is ever exposed to a worksheet of any kind. I would swing my magic wand, all worksheets would disappear, and the memory of them would be gone forever. In the real world, I know that simply won't happen. There will still be some parents who will insist on using worksheets.
Know what you are buying. If you can't see it (there is no sample shown), then do not buy it. There are many people out there trying to make a buck off the current popularity of worksheets. Many, if not most, of these people know nothing about mathematics, teaching, or how the brain learns. Anyone can type columns of addition, subtraction, multiplication, etc. problems; but these worksheets will be bad for your child. Don't trust what you can't see.