La historia de los sistemas numéricos: Valor posicional (The History of Number Systems: Place Value)

Learn the history of number systems with this engaging Spanish book! This text combines mathematics and literacy skills, and uses practical, real-world examples of problem solving to teach math and language arts content. Students will learn place value while reading about the number systems of the Egyptians and Romans, and also learn important vocabulary terms like cuneiform, binary systems, roman numerals, and more! The full-color images, math charts, and practice problems make learning math easy and fun. The table of contents, glossary, and index will further understanding of math and...

These titles look at many of the animals typically found in zoos, covering such topics as appearance, behavior, and babies. Vivid photographs compare the habitat and diet of each animal, both in the wild and the zoo.

For use in schools and libraries only. Malala Yousafzai was a girl who loved to learn but was told that girls would no longer be allowed to go to school. She wrote a blog that called attention to what was happening in her beautiful corner of Pakistan and realized that words can bring about change. She has continued to speak out for the right of all children to have an education. In 2014 she won the Nobel Peace Prize.

Looks at the life and career of Justice Sonia Sotomayor, the third woman and first Hispanic American to become a member of the United States Supreme Court.

A human hand is found in the zoo's elephant enclosure. The rest of the teacher and ardent environmentalist turns up on the lawn. Although admired by his students, nearly everyone else seems to have a reason to want him dead.