Explains how vegetables are grown on a farm. Includes information for parents and teachers.

Explains about plant seeds, bulbs, and flowers.

Introduces the underwater parts of our world, with simple experiments which teach about life in and around the water's edge.

Photographs and simple text explain night and day and why the changes occur.

Invierno, primavera, verano y otoño—las estaciones son uno de los ciclos más familiares de la naturaleza. Pero, ¿por qué cambia el clima? Aprenda por qué los patrones climáticos cambian a lo largo de las estaciones. Winter, spring, summer, and fall—the seasons are one of nature's most familiar cycles. But why does the weather change? Learn why weather patterns change over the seasons.