In open lessons, learn about nature, surroundings, and the environment while simultaneously imparting knowledge about time and history? This is made possible with the Stone Age workshop! Many children collect stones, but the significance of this important natural material is often unknown to them. By linking it to the theme of the Stone Age and with the help of various teaching suggestions, students become aware of the usefulness of stones - both in the past and today. Research tasks encourage children to collect materials, examine them closely, and process them according to crafting instructions. Reading texts complement and deepen the practical insights of the students; theme-related games round out the offerings. The pages of the solution section can also be distributed to students for self-assessment. Gradually, students build up their entire knowledge base.