¿Dónde está mi jersey?

If it were possible to shrink down and take a tour of a human body, would you want to go? Readers will get that chance when they explore the body of a guy named Marty, who will let them check out the body systems that keep his heart beating and his body moving every day. With the help of a tiny ship that goes through his ears and all the way through his digestive system, readers will learn exactly what they are made of with this great book.

Practice time measurement by timing races! Racing is all about having the fastest time, so accurate time measurement is very important for athletes! Young readers will learn all about how athletes measure racing times and will practice their mathematical and STEM skills. The Spanish-translated text, vibrant images, fun practice problems, and helpful mathematical charts in this title make time measurement seem exciting and simple!

Describes the frogs, toads, and salamanders of Mexico's Yucatan Peninsula, looking particularly at the wide variety of adaptations found in the few species that dwell there.

(back cover) Hablemos de esto! A menudo, los ni os demasiado tmidos tienen preocupaciones y se sienten incomprendidos. ERES T?MIDO? ayuda a ni os y ni as a comprender que la timidez puede vencerse de muchas maneras. Ning n ni o debiera avergonzarse por ser tartamudo o por enrojecer cuando se le hace una pregunta. Todo lo que necesitan es aprender a enfrentar la situaci n adecuadamente. ERES T?MIDO? explica a los ni os que su timidez ir y(c)ndose poco a poco siempre que sigan tratando de expresarse ante los dem s."