Perfect for inquiring young minds, the activities in this kit are fun and educational, providing a strong introduction to the wonders of science. By combining the items in this kit with common household objects, the Making Machines book shows science enthusiasts how to do super-exciting experiments, simply and safely, at home. This kit includes materials to create your own medieval catapult!

• 10 split rings
• 1 straw
• 2 wooden dowels
• 4 packets of air-dry clay
• 3m (10ft) cotton string
• 1 bolt
• 3 nuts
• 10 washers
• Cardboard pincer pieces
• Cardboard trebuchet pieces
• 24-page book

Box Size: 10.22" l x 7.78" w x 2.01