Playful Elementary Math Session Cover

[Format] Landscape 16:9 gig cover, playful flat vector illustration on saturated flat yellow. Chunky organic blobs with thick white outlines, high-contrast serif display type. Bright, poster-flat, no gradients and no photo. No watermark, no personal names. [Layout] The whole field is a strong flat yellow, edge to edge. Left column, upper two-thirds: a stack of six colour-coded uppercase subject words, left-aligned, with a thin black hand-drawn underline swash above the first word and a second swash below the last. Above that stack sits a neat four-by-four grid of small solid black dots; the identical dot grid repeats at the bottom-right. Centre-right: the main title sits inside a large teal-green rounded organic blob that is deliberately irregular — squared off on its left flank and stepped or notched on the right — with the title set as four stacked lines inside it. A second, flatter green blob with a white outline floats at top-centre and is partially overlapped by the title blob. A magenta-pink blob with a thick white outline bleeds off the bottom-left corner. Two small black open rings sit one at mid-left under the word stack and one at bottom-centre. Top-right: a small tight cluster of four overlapping rounded-square tiles. [Subject] None — no human figure and no product shot. Typography and flat organic shapes only. [Headline] Six subject words in bold condensed uppercase sans, each a different accent colour: 'ADDITION' in magenta, 'SUBTRACTION' in orange, 'MULTIPLICATION' in teal-green, 'DIVISION' in magenta, 'GEOMETRY' in orange, 'FRACTIONS' in teal-green. The title inside the teal blob is a heavy dark navy serif, title case, four lines: 'Book', 'Elementary', 'Mathematics', 'Sessions', with 'Mathematics' the widest line and slightly overhanging the blob edge. [Badges] Top-right, a cluster of four small flat rounded-square tiles, each carrying a single thin white arithmetic glyph (plus, minus, multiply, divide) on a lilac, green, blue and pink tile. Also the two thin black ring circles and the two four-by-four dot-grid textures described above. [Mood] High-sugar primary palette: yellow, magenta, orange, teal-green. Friendly and child-facing. The dark navy serif block on the teal blob gives the cover one solid, instantly readable mass at thumbnail size.