Por qué algunos animales tejen telarañas (Why Animals Live in Webs)

¿Y si el universo no pesara nada y la materia no existiera realmente? Lo que parecería ser una duda legítima para un erudito místico de los Vedas Indios es, en cambio, un resultado embarazoso de la aplicación de la Relatividad Restringida a las observaciones obtenidas por un grupo de astrofísicos, que han medido la radiación cósmica de fondo de nuestro universo. En los albores del nuevo milenio, el satélite WMAP, más allá de proporcionarnos una medida del cosmos, nunca antes obtenida, ha creado bastantes quebraderos de cabeza respecto al concepto de universo, en el que todavía hoy ...

English Spanish bilingual children's book. Perfect for kids studying English or Spanish as their second language. Little Jimmy doesn't like to brush his teeth. Even when his mother gives him a brand new orange toothbrush, his favorite color, he doesn't use it like he is supposed to. But when strange and magical things start happening to Little Jimmy, he begins to realize how important brushing his teeth can be. I love to brush my teeth is a delightful story full of beautiful illustrations sure to get your little ones attention. If your child is having difficulty learning to brush their teeth...

¿Qué quiere ser cuándo crezca? En Cuando crezca, descubrirá cuantas cosas diferentes podrá hacer! (What do you want to be when you grow up? In Cuando crezca, you will discover just how many things you can be!) A little boy explores being a doctor, dentist, singer, fire fighter, pilot, teacher, construction worker, cook, famous baseball player and more in this adorably-illustrated book. At the end of the day, he still can’t decide because he’s only 7! Cute text, coupled with beautiful watercolor art, illustrates each occupation in a fun, child-like way. Learn simple English words and...

Young Readers Will Identify That Goods Are Objects And Services Are Activities That Can Satisfy People's Wants.