Construction Zone Book Set (5 Books)9781512433586: What vehicle can push away rocks and dirt? A bulldozer! Bulldozers help clear land for buildings. From forests to the dump, bulldozers push things out of the way. With carefully leveled text, a vibrant photo glossary, and age appropriate critical thinking questions, this books engages young readers and helps them learn all about bulldozers. 9781512433579: What truck do you need when you want to make a new sidewalk? A concrete mixer!