The hand2mind age-appropriate The Ultimate Inventor tool kits encourage children to explore a wide variety of engineering concepts and solve real-world problems. The teacher-developed project guide and extensive supply of building materials included in this tool kit provide hours of open-ended exploration. The reusable storage box can also be used to store your child's creations. Kit includes: more than 250 piece of building materials, 10 building challenges, and activity guide. Open-ended exploration appeals to each child's unique needs. Building challenges promote creative and innovative problem-solving. Warning: choking hazard due to small parts; not recommended for children under three. Foster creativity, innovation, and exploration with this tool kit. Recommended for kids ages eight and up. Encourages children to explore engineering concepts and solve real-world problems