Keywords
4, 4-year-old, abstract, adding, addition, arithmetic, arithmetical, black, blackboard, boy, chalk, child, childhood, classroom, education, educational, equation, equipment, figures, four, human, learning, male, mathematical, mathematics, numbers, pupil, representations, school, schoolboy, schoolchild, simple, student, stock image, images, royalty free photo, stock photos, stock photograph, stock photographs, picture, pictures, graphic, graphics, fine art prints, print, poster, posters, mural, wall murals, u14778111