This 12×18 inch poster is printed on premium, durable paper. Proudly Made in the USA by PosterEnvy. The perfect size for any room. PosterEnvy is a family owned business, delivering top-notch posters around the world for over 20 years. Our posters are designed to last they won’t fade or pucker for years of enjoyment. Every poster features crisp, vivid artwork. We are a solar powered company. This colorful cartoon-style educational poster teaches simple sound and light experiments for young students, including string telephone vibrations, prism rainbows, and shadow puppets with step-by-step instructions, vocabulary, and science investigation checklist.Premium Print: This PosterEnvy 12×18 inch poster is printed on Durable, Heavy Duty Paper, Designed to last many years. Features sound waves, prism rainbows, shadows, string telephone, experiments for kidsProudly Made in the USA: PosterEnvy is a Family owned business, delivering top-notch posters around the world for over 20 years. Ideal for elementary science, physics basics, light refraction, vibration conceptsSolar Powered Production: All our posters are designed and printed using solar energy, with crisp vivid artwork. Perfect for teaching sound travel, spectrum colors, opaque objects, educational vocabularyEngaging Science Experiments: Bright cartoon illustrations show kids doing hands-on activities like string telephones, prism rainbows, and shadow puppets. Creates fun learning mood for classrooms or home; ideal for study areas, labs, kids roomsPerfect Gift Idea: Great for young scientists, teachers, homeschool parents, birthdays, back to school. Appeals to elementary students learning physics, experiments, rainbows, shadows, vibrations