A first grade teacher is developing a lesson on place value. Based on Piglet's theory, the teacher should do which of the following activities first?A.Use craft sticks to represent numbers and group them by ones and tens. B.Have the students darken squares on graph paper to represent numbers in the ones place and the tens place.C.Have the students draw pictorial representations of each other.D.Use numerals to explain where each value lies on a number line