Final answer:
To solve this problem, multiply the number of students by the number of chalk pieces given per student. Then, subtract the number of pieces given from the total number of pieces in the box to find the remaining chalk.
Step-by-step explanation:
To find out how many pieces of chalk are left in the box, we first need to calculate how many pieces have been given to the students. The art teacher gave each of the 10 students 2 pieces of chalk, so the total number of pieces given is 10 students x 2 pieces/students = 20 pieces.
To determine how many pieces are left in the box, we subtract the number of pieces given from the total number of pieces in the box. The art teacher initially had 56 pieces, so we subtract 20 pieces from 56 pieces to find that there are 36 pieces of chalk left in the box.