A well rested child is one of the most important ingredients for a learning environment. Students should come to class ready to learn. Having a good, nutritious breakfast also helps.
For work at home, a supply of pencils, erasers, ruler, sharpener and scrap paper are also needed as well as wall clock and possibly an egg timer or stop watch to help students focus.
Having a nurturing environment with limited noise and a comfortable work chair and desk with the room having appropriate light will also help your child be more prepared to finish their homework and stay on task.