扁平化教学办公教具图标元素

Low-saturation flat minimalist teaching tool icons on white background, soft muted color palette with maximum two colors per icon, pixel-perfect vector style, chalkboard with chalk in sage green and cream frame, whiteboard with marker in muted mint and off-white, projector with lens in soft seafoam and light beige, pointer stick in dusty green and cream, globe with stand in muted moss and sand, microscope with eyepiece in soft celadon and cream, magnifying glass with handle in dusty sage and light gray, abacus with beads in muted pistachio and cream, clock with hands in soft mint and off-white, nine icons evenly distributed in three rows and three columns, clean geometric shapes with harmonious low-saturation palette, no facial expressions, pure minimalist teaching representation.