Learning to observe, compare, and evaluate are essential skills in the classroom and in life. This valuable and accessible set focuses on important categories of comparison, including weight, height, quantity, and volume, allowing early readers to expand their understanding of basic math and science concepts. They'll be engaged by the brightly written narratives and colorful photographs of familiar and fun objects like toys and animals. Features include: Simple, at-level texts for beginning readers. Supportive photographs aid in vocabulary acquisition. Covered topics appear in state and national math curricula.