Behavior Modification

This Spanish-language series presents the complete range of math concepts and skills students are expected to master during the first grade. The series moves sequentially, from easiest to hardest concepts, with each book covering a different math topic. The first volume reviews the math concepts students learned in kindergarten. The next six books cover counting, adding and subtracting, tables and graphs, money, patterns, and measuring. The eighth volume is a summary of the math concepts students have studied throughout the year. Each book presents situations that show the relevance of math...

Calcuta, 1932: El corazón de las tinieblas. Un tren en llamas atraviesa la ciudad. Un espectro de fuego siembra el terror en las sombras de la noche. Pero eso no es más que el principio. En la víspera de cumplir 16 años, Ben, Sheere y sus amigos deberán enfrentarse al más terrible y mortífero enigma de la historia de la ciudad de los palacios.

Born in 1452, Leonardo da Vinci is still, today, considered one of the most talent people to have ever lived. From his world famous paintings and drawings, such as the Mona Lisa and the Vitruvian Man, to his ingenious inventions of the parachute, the helicopter, and the military tank, da Vince was always a step ahead of his time. Discover the origins of a man who refused to be defined by just one vocation. Whether science and engineering or architecture and art, Leonardo da Vinci was the ultimate Renaissance Man.

Un libro ideal para conversar con los niños y las niñas temas de sexualidad con un enfoque integral. Con una mirada actualizada, abierta, directa y clara se abordan temas de sexualidad, género, pareja, intimidad, desarrollo, adopción, familia y reproducción, entre otros.