Protagonistas de la Historia

Readers may never expect that they might free fall to Earth, but if they have ever dived into a pool, that's exactly what they've done. This book shows readers how Newton's three laws of motion affect divers, skydivers, and mountain climbers' movements. Readers discover who uses gravity, and who works against it, and all other forces that contribute to a successful dive or climb. After reading this book, readers can decide if they will ever be interested in engaging in one of these extreme sports.

Ofrece ejemplos de animales que viven en bosques tropicales, incluyendo el elefante pigmeo de Borneo, el perezoso de tres puntas y el gorila plateado.

Componen este método de preescritura 10 cuadernos de ejercicios ordenados de forma progresiva y estructurada de menor a mayor dificultad.;Su finalidad es la de iniciar al niño en el desarrollo de las habilidades motrices finas que necesitará en el futuro para la escritura.;Es un método analítico, que se basa en la repetición por separado de los movimientos de la mano, hasta llegar a conseguir una habilidad motora que permita después trazar, todas las letras.

When many think of the Constitution, they think of the Founding Fathers: Thomas Jefferson, John Adams, Benjamin Franklin...but neither Jefferson nor Adams even signed it. Facts like this will surprise readers, while further information will enlighten them about both the crucial document called the U.S. Constitution as well as about its creation and ratification. This essential volume is a significant addition to any elementary social studies collection.