Keywords
calculating, calculation, class, classroom, color, color image, colour, copy space, education, elementary school, horizontal, indoor, indoors, information, inside, intelligence, knowledge, learning, math, negative space, nobody, number, numeral, numeric, photography, problem solving, resolving, school, schoolroom, solving, studying, white space, whiteboard, wisdom, 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, bld156383