扁平化手绘风学习教育科研元素

Low-saturation flat minimalist subject symbol icons on white background, soft muted color palette with maximum two colors per icon, pixel-perfect vector style, math with calculator and pi symbol in dusty lavender and light gray, science with beaker and atom in soft lilac and cream, literature with book and quill in muted mauve and off-white, history with scroll and hourglass in dusty purple and light gray, geography with globe and map in soft wisteria and cream, art with palette and brush in muted orchid and sand, music with note and treble clef in dusty lavender and light beige, language with ABC and speech bubble in soft periwinkle and gray, computer science with code brackets in muted violet and cream, nine icons evenly distributed in three rows and three columns, clean geometric shapes with harmonious low-saturation palette, no facial expressions, pure minimalist subject representation.