3 years & up. Build familiar construction vehicles or create new ones by mixing and matching colors and adding a standard unit block to hold it all together. This themed-exploration set includes enough parts to build four construction vehicles: sanitation truck, backhoe, dump truck, and cement mixer. Encourage dramatic play, block building, and color matching skills with these four vehicles. Use this set in a lesson about the specific construction careers these vehicles relate to. The set includes 16 pieces. Unit blocks not included.