Heather Kissock

Pushing the roundabout makes it spin. Pulling the roundabout makes it stop. Learn more about what is pushed and pulled at the playground in At the Playground. This title is part of the Pushes and Pulls series, which has been developed for children ages 5 to 7.

Sydney is Australia's largest city. It is known for its scenic harbor. Sydney's Harbour Bridge stretches across the harbor, linking the northern and southern parts of the city. Find out more about this fascinating city in Sydney, a title in the World Class Cities series.

Did you know that a cultivator can be up to 80 feet wide? That is wider than two school buses put end to end. Learn more about these machines in Cultivators, one of the titles in the Farm Machines series

Singapore is both a city and a country. It is made up of a main island and about 60 smaller islands. Almost 6 million people live there. Find out more about this fascinating city in Singapore, a title in the World Class Cities series.

Moscow is the capital city of Russia. It began as a small village thousands of years ago. Today, more than 12 million people live there. Find out more about this fascinating city in Moscow, a title in the World Class Cities series.

Did you know that some harvesters can harvest 30 acres of crop in an hour? That is about the size of 23 football fields. Learn more about these machines in Harvesters, one of the titles in the Farm Machines series.

Did you know that black bear cubs are born in a den? They stay with their mother, who feeds them and keeps them warm. Find out more in “Black Bears”, a Little Backyard Animals book.

¿Sabías que la Tierra es el tercer planeta desde el Sol? Es el quinto planeta más grande del sistema solar. Descubre más cosas en La Tierra, uno de los títulos de la serie Descubriendo el espacio.

Did you know that Earth is the third planet from the Sun? It is the fifth-largest planet in the solar system. Find out more in Earth, one of the titles in the Discovering Space series.

Did you know that an opossum mother carries her babies in a pouch? The pouch is part of the mother's belly. Find out more in “Opossums”, a Little Backyard Animals book.