Free Educational Posters by Mail Classroom Card Grid

Card grid infographic titled "Free Educational Posters by Mail". 8 uniform cards in a clean grid, designed as an educational classroom poster for teens / middle school in a minimal modern Montessori style with a warm earth palette, inclusive imagery, and educationally accurate visual cues. Each card must contain: a clear central icon or simple diagram, a name in English, and a one-line description in English. Suggested card set: 1) Science Posters — atom, lab flask, planet icons; free mailed classroom science visuals. 2) Geography Posters — globe, map, compass; free mailed maps and world learning charts. 3) Health Posters — human body, nutrition plate, exercise icons; free mailed wellness and anatomy materials. 4) Safety Posters — helmet, warning triangle, emergency symbols; free mailed classroom safety references. 5) Environmental Posters — leaf, recycling arrows, water drop; free mailed ecology and conservation visuals. 6) Math Posters — ruler, fractions, geometry shapes; free mailed mathematics concept charts. 7) History Posters — timeline, column, historical artifact icons; free mailed history and civics learning displays. 8) Language Posters — book, speech bubble, alphabet symbols; free mailed literacy and vocabulary aids. Keep layout highly legible, poster-like, balanced spacing, rounded cards, soft shadows, muted terracotta, sand, clay, olive, and cream tones. Use simple diverse student-friendly iconography, no branding, no envelopes with company logos, no promotional clutter. Visually imply the search intent through mail-themed cues such as a neutral mailbox, postage stamp shapes, and rolled posters in some card diagrams, but do not render the search phrase as on-image text. All text MUST be written in English (array). Every heading, label, caption, legend and metric name in the image must be in English — not English. Spell each English word correctly using English characters and diacritics. Numbers stay as digits, no real brand logos, no watermarks. Editorial reference-poster illustration. Educationally accurate. Inclusive imagery. Render labels clearly in target language.