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Mammals are a very diverse group. From whales and dolphins that give birth in the water to platypuses that lay eggs, these life cycles can often seem very different. However, they’re very similar. Readers learn the basic structure of the mammal life cycle through simple language and accompanying diagrams that show the cycle step by step. The main content offers a way for struggling readers to more easily learn an important science curriculum topic, but can also be a great review tool for any reader.

Born into slavery, Frederick Douglass relied on his own determination and ingenuity to carve a path to freedom. Once free, he dedicated his life to improving the lives of others and fighting for justice and equality. This inspirational Spanish biography uses primary sources to engage students in learning about the fascinating life of Frederick Douglass. Students will build their literacy skills as they are immersed in social studies content. Text features include a glossary and an index to increase comprehension and academic vocabulary.

Explains, in simple terms, the reasons for skin color, how it is determined by heredity, and how various environmental factors affect it.

Només hi ha un planeta Terra, però saps què el fa únic? Obre les pàgines d'aquest llibre per viatjar a través de les galàxies, observar les estrelles de prop i visitar tots els racons de la Via Làctia. Recorre els planetes veïns i sorprèn-te amb els secrets que amaga el nostre món. Curiositats impactants, il·lustracions detallades i dades impressionants de la mà de Tomàs Molina. Descobreix els secrets de l'univers i endinsa't a les profunditats de la Terra amb EL GRAN LLIBRE DEL PLANETA.