In good condition
 
Incubation (Macmillan Level 20) is an accessible science reader that explains how eggs develop and hatch, guiding children through the incubation process with clear language and supportive illustrations. Pigdon and Woolley introduce key concepts such as embryo growth, warmth and temperature control, turning the eggs, and the final stages leading to hatching, all presented in a way that builds scientific vocabulary and understanding. Ideal for early‑primary science units or guided reading, the book encourages curiosity about life cycles and simple experimental observation while strengthening confidence with factual texts.