Our wide range of products spans from optical illusions to experimental electronic kits, from anatomical to globes, helping children explore the world from outer space to the land they live in and other things on it. Experiment with safe materials and prove basic scientific laws, you can create a volcano, split colours and see how gasses expand. Tree of knowledge continues the successful range of kitchen chemistry kits with chemistry 40. Helps to develop your childs interests. Engage children in the learning process in an entertaining way. Sturdy design. Have hours of learning fun. Size H45, W27cm. For ages 10 years and over. WARNING(S): Not suitable for children under 3 years old. Only for domestic use.