This lot of 9 vintage classroom math and science posters, featuring designs by McDonald and Frank Schaffer, is a nostalgic and educational addition to any home or classroom. These posters offer a classic touch to teaching supplies, making them ideal for schools or for homeschooling purposes. With a variety of math and science concepts covered, these posters provide a visual and engaging way to present important information to students. Perfect for creating a stimulating learning environment with a touch of retro charm.