A parent must know what level of math and any other subject, for that matter, that their child is performing at every school year. When children enter kindergarten and the school recommends that children know their ABC's and know how to count to twenty or whatever number, it is the parent's responsibility to make sure the child is prepared prior to enrolling in school.
1st grade worksheets are used for helping kids learning in the first grade in primary schools. These worksheets are offered by many charitable & commercial organizations through their internet portals. The worksheets provide study materials to kids in a funky & innovative way, to magnetize them towards learning.
The parent's role in their child's math development is very important and should start as young as possible. Teaching young children how to count, add and subtract numbers in their head without pencil and paper can stimulate the brain to think mathematically. Parent s can start the process by teaching children how to count from one to one hundred. Teaching children how to mentally figure out math problems should also be part of this process.
I have observed teachers who really challenge their students to achieve higher order thinking These teachers take their students as early as the Second Grade and teach them how to add, subtract, multiply and divide using only their bran. We call this Mental Math. When I observed a Second Grade Class that had their students mentally answering math computation questions, I put my own son in that class. Shortly after being enrolled, He, too, learned how to do Mental Math. From that point on, math was my son's best subject. Teachers can really make a difference and parents can help affect change.