| Ritter und Burgen / Das Alte Rom | WAS IST WAS | CD | 12 | | | 9783898328999 |
| Film & Fernsehen / Mond & Kosmos | WAS IST WAS | CD | 31 | | | 602498702406 |
| Wale & Delphine / Bäume | WAS IST WAS | CD | 33 | | | 0602498702420 |
| Bären / Wölfe | WAS IST WAS | CD | 25 | | | 9783788627218 |
| Feuerwehr / Polizei | WAS IST WAS | CD | 27 | | | 9783788629625 |
| Mittelalter / Samurai | WAS IST WAS | CD | 28 | | | 9783788629618 |
| Entdecker / Polargebiete | WAS IST WAS | CD | 29 | | | 9783788629601 |
| Fußball / Formel 1 | WAS IST WAS | CD | 29 | | | 9783788629960 |
| Gladiatoren / Die Germanen | WAS IST WAS | CD | 26 | | | 9783788629557 |
| Der Urmensch / Eiszeiten | WAS IST WAS | CD | 29 | | | 9783788629489 |
| Im Reich der Bären / Wölfen auf der Spur | WAS IST WAS | CD | 25 | | | 9783788629540 |
| Pinguine / Tiere im Zoo | WAS IST WAS | CD | 23 | | | 9783788629380 |
| Olympische Spiele / Die alten Griechen | WAS IST WAS | CD | 22 | | | 9783788629366 |
| Bauernhof | WAS IST WAS Junior | CD | 11 | | | |
| Dinosaurier | WAS IST WAS Junior | CD | 9 | | | |
| Feuerwehr | WAS IST WAS Junior | (unknown) | 12 | | | |
| Ritterburg | WAS IST WAS Junior | CD | 11 | | | |
| Weltreligionen / Die Bibel | WAS IST WAS | CD | 25 | | | 9783788629311 |
| Menschenaffen / Elefanten | WAS IST WAS | CD | 32 | | | 9783788629304 |
| Flughafen | WAS IST WAS Junior | CD | 13 | | | 978378862813 |
| Mein Körper | WAS IST WAS Junior | CD | 13 | | | |
| Polizei | WAS IST WAS Junior | CD | 12 | | | 9783788628130 |
| Baustelle | WAS IST WAS Junior | CD | 9 | | | 9783788628024 |
| Das Klima / Natur schützen | WAS IST WAS | CD | 35 | | | 9783788629250 |
| Feuerwehr | WAS IST WAS Junior | CD | 12 | | | 9783788628048 |
| Pferde & Ponys | WAS IST WAS Junior | CD | 10 | | | 9783788628017 |
| Indianer | WAS IST WAS Junior | CD | 11 | | | |
| Das alte Ägypten / Pyramiden | WAS IST WAS | CD | 35 | | | 9783788629199 |
| Ein Baby kommt zur Welt | WAS IST WAS Junior | CD | 12 | | | |
| Im Wald | WAS IST WAS Junior | CD | 13 | | | 9783788628208 |
| Sport / Ernährung | WAS IST WAS | CD | 27 | | | 9783788629175 |
| Das Meer | WAS IST WAS Junior | CD | 10 | | | 9783788627942 |
| Bagger & Traktoren / Mechanik | WAS IST WAS | CD | 16 | | | 9783788629120 |
| Maya & Azteken / Inka | WAS IST WAS | CD | 19 | | | 9783788629144 |
| Deutschland / Europa | WAS IST WAS | CD | 27 | | | 9783788627355 |
| Schätze der Erde / Kristalle | WAS IST WAS | CD | 28 | | | 9783788629137 |
| Unsere Erde | WAS IST WAS Junior | CD | 12 | | | 9783788617875 |
| Versunkene Städte / Die sieben Weltwunder | WAS IST WAS | CD | 34 | | | 9783788627249 |
| Wirtschaft / Geld | WAS IST WAS | CD | 28 | | | 9783788629113 |
| Die Sterne / Die Zeit | WAS IST WAS | CD | 25 | | | 9783788627300 |
| Sonne, Mond und Sterne | WAS IST WAS Junior | CD | 10 | | | 9783788627973 |
| Schlangen & Echsen / Vögel | WAS IST WAS | CD | 30 | | | 9783788629083 |
| Musikinstrumente / Die Welt der Töne | WAS IST WAS | CD | 28 | | | 9783788627447 |
| Unsere Erde | WAS IST WAS | CD | 7 | | | 9783788669966 |
| Wetter | WAS IST WAS | CD | 6 | | | |
| Heimtiere / Wilde Tiere | WAS IST WAS | CD | 26 | | ISBN 978-3-7886-2741-6 | 9783788627416 |
| Dinosaurier / Ausgestorbene Tiere | WAS IST WAS | CD | 33 | | | 9783788629045 |
| Der Urmensch / Eiszeiten | WAS IST WAS | CD | 28 | | | 4019589050975 |
| Hunde | WAS IST WAS | CD | 19 | | ISBN 978-3-7886-6997-3 | 9783788669973 |
| Abenteuer Höhlen / Faszination Berge | WAS IST WAS | CD | 26 | | | 9783788629090 |
| Die Wikinger / Völkerwanderung | WAS IST WAS | CD | 30 | | | 9783788627362 |
| Dinosaurier | WAS IST WAS | CD | 15 | | | |
| Erfindungen / Bionik | WAS IST WAS | CD | 25 | | | 9783788627423 |
| Fantastische Tiersinne / Tierwanderungen | WAS IST WAS | CD | 34 | | | 9783788627430 |
| Fußball / Formel 1 | WAS IST WAS | CD | 29 | | | 9783788628826 |
| Im Zoo | WAS IST WAS Junior | CD | 14 | | | 9783788627980 |
| Leben der Ritter / Mächtige Burgen | WAS IST WAS | CD | 33 | | | 9783788629069 |
| Naturkatastrophen / Luft und Wasser | WAS IST WAS | CD | 22 | | | 9783788627270 |
| Orcas / Polarmeere | WAS IST WAS | CD | 31 | | | 9783788629076 |
| Unser Körper | WAS IST WAS | CD | 19 | | | 9783788670047 |
| Das Wetter / Die Jahreszeiten | WAS IST WAS | CD | 26 | | | 9783788628994 |
| Haie / Korallenriffe | WAS IST WAS | CD | 39 | | | |
| Piraten / Schiffe | WAS IST WAS | CD | 39 | | | 9783788628987 |
| Unsere Erde / Vulkane | WAS IST WAS | CD | 23 | | | 9783788628970 |
| Lkw, Bagger, Traktoren | WAS IST WAS Junior | CD | 16 | | | |
| Die Sonne / Energie | WAS IST WAS | CD | 21 | | | 9783788627225 |
| Faszination Autos / Eisenbahn | WAS IST WAS | CD | 14 | | | 9783788628932 |
| Im Reich der Insekten / Bienen & Ameisen | WAS IST WAS | CD | 35 | | | 9783788627386 |
| Wale & Delfine | WAS IST WAS Junior | CD | 12 | | | |
| Wale & Delfine / Geheimnisse der Tiefsee | WAS IST WAS | CD | 41 | | | 9783788628956 |
| Versunkene Schätze / Abenteuer Tauchen | WAS IST WAS | CD | 38 | | | 9783788628918 |
| Am Hafen | WAS IST WAS Junior | CD | 13 | | | 9783788627898 |
| Spione & Agenten / Kriminalistik | WAS IST WAS | CD | 32 | | ISBN # 978-3-7886-2889-5 | 9783788628895 |
| Raumfahrt / Der Mond | WAS IST WAS | CD | 45 | | | 9783788628925 |
| Zauberer & Hexen / Phänomene | WAS IST WAS | CD | 21 | | | 9783788627317 |
| Der Traum vom Fliegen / Helikopter im Einsatz | WAS IST WAS | CD | 35 | | | 9783788628864 |
| Katzen verstehen / Im Reich der Löwen | WAS IST WAS | CD | 41 | | | 9783788628871 |
| Die Schule geht los! | WAS IST WAS Junior | CD | 14 | | | |
| Unser Körper / Das Gehirn | WAS IST WAS | CD | 33 | | | 9783788629052 |
| Städte der Zukunft / Wolkenkratzer | WAS IST WAS | CD | 45 | | | 9783788628857 |
| 011: Unser Körper / Das Gehirn | WAS IST WAS | Digital Media | 33 | | | |
| Große Entdecker / Polargebiete | WAS IST WAS | CD | 29 | | | 9783788627188 |
| Im Reich der Bären / Wölfen auf der Spur | WAS IST WAS | CD | 25 | | | 9783788627218 |
| Wilde Wälder / Lebendiger Boden | WAS IST WAS | CD | 40 | | 082003 | 9783788628840 |
| Pinguine / Tiere im Zoo | WAS IST WAS | Digital Media | 23 | | | |
| Welt der Fische / Wunder der Ozeane | WAS IST WAS | Digital Media | 23 | | | 9783788673383 |
| 33: Menschenaffen / Elefanten | WAS IST WAS | Digital Media | 32 | | | |
| 38: Fit durch Sport / Ernährung | WAS IST WAS | Digital Media | 26 | | | 9783788673451 |
| Das alte Ägypten / Pyramiden | WAS IST WAS | CD | 35 | | | 9783788673475 |
| Heimtiere / Wilde Tiere | WAS IST WAS | Digital Media | 27 | | | |
| Die Reise der Titanic / Expedition Tauchboot | WAS IST WAS | CD | 38 | | | 9783788643348 |
| 51: Spione & Agenten / Kriminalistik | WAS IST WAS | Digital Media | 32 | | | |
| 52: Der Traum vom Fliegen / Helikopter im Einsatz | WAS IST WAS | Digital Media | 35 | | | |
| 53: Katzen verstehen / Im Reich der Löwen | WAS IST WAS | Digital Media | 41 | | | |
| 54: Wilde Wälder / Lebendiger Boden | WAS IST WAS | Digital Media | 40 | | | |
| 55: Städte der Zukunft / Wolkenkratzer | WAS IST WAS | Digital Media | 45 | | | |
| 57: Die Reise der Titanic / Expedition Tauchboot | WAS IST WAS | Digital Media | 38 | | | |
| Große Meeresforscher-Box | WAS IST WAS | 3×CD | 23 + 41 + 39 | | | 9783788670252 |
| 58: Expedition zum Mars / Kometen und Asteroiden | WAS IST WAS | Digital Media | 41 | | | |
| 59: Bienen und Natur / Welt der Ameisen | WAS IST WAS | Digital Media | 41 | | | |