- Invertebrates, [idea and concept of this work, Editorial Sol 90]
- Volcanoes and earthquakes, [idea and concept of this work, Editorial Sol 90]
- Reptiles and dinosaurs, [idea and concept of this work, Editorial Sol 90]
- Mammals, [idea and concept of this work, Editorial Sol 90]
- Rocks and minerals, [idea and concept of this work, Editorial Sol 90]
- Birds, [idea and concept of this work, Editorial Sol 90]
- Energy and movement, [idea and concept of this work, Editorial Sol 90]
- Weather and climate, [idea and concept of this work, Editorial Sol 90]