| Kids Discover Master List | Feb-07 | ||
| Jan-99 | African Kingdoms | 17 | |
| Oct-96 | Amazon | 1 | |
| No Month 2005 | America 1492 | 16 | |
| Jun-05 | Ancient China | 26 | |
| Sep-01 | Ancient Egypt | 1 | |
| Aug/Sept 1994/2004 | Ancient Greece | 14 | |
| May-03/2006 | Ancient India | 17 | |
| Dec-06 | Ancient Persia | 1 | |
| Jun-01 | Antarctica | 17 | |
| Astronauts | |||
| Mar-06 | Atoms | 1 | |
| Jan-96 | Australia | 27 | |
| Mar-02/2004 | Aztecs | 17 | |
| Jul-05 | Bees | ||
| Jul-04 | Bicycles | 1 | |
| Nov-06 | Birds | 1 | |
| Apr-99 | Blood | 2 | |
| Mar-01 | Bones | 1 | |
| Jun-05 | Brain | 25 | |
| Jun-04 | Bridges | 1 | |
| Apr-92 | Bubbles | ||
| Jul-01 | Butterflies and Moths | ||
| Jan-92 | Circus | 1 | |
| Jan-06 | Civil Rights | 2 | |
| Nov-98 | Clara Barton | 1 | |
| No Month 2006 | Colonial America | 16 | |
| Oct-92 | Columbus | 1 | |
| Apr-94 | Cowboys | 1 | |
| DaVinci | 153 | ||
| Aug-00 | Dogs | 1 | |
| Mar-04 | Earth | 2 | |
| May-92 | Earthquakes | 20 | |
| Feb-02 | Ecology | 1 | |
| Feb-05 | Electricity | 1 | |
| Mar-96 | Elephants | 1 | |
| June/July 1995 | Endangered Species | 1 | |
| May-95 | Energy | 1 | |
| Dec-94 | Equator | 1 | |
| Aug-04 | Everglades | 1 | |
| Feb-94 | Explorers | 1 | |
| Jan-94 | Fire | 1 | |
| Jun-03 | Firefighters | 1 | |
| Apr-95 | Flowers | 1 | |
| June/July 1992 | Food | 1 | |
| Galaxies | |||
| Apr-96 | Garbage | 1 | |
| Oct-03 | Germs | 1 | |
| Apr-93 | Glass | 1 | |
| Jan-95 | Gold | 1 | |
| Aug-06 | Grand Canyon | 1 | |
| Apr-06 | Great Depression | 1 | |
| Feb-01 | Hawaii | 1 | |
| Dec-96 | Heart | 1 | |
| May-96 | Himalayas | 1 | |
| Sep-03 | How America Works | 1 | |
| Jun-02 | Hurricanes | 1 | |
| Aug-03 | Ice Age | 1 | |
| Immigration | |||
| Mar-00 | Incas | 26 | |
| Jun-98 | Insects | 1 | |
| Jul-06 | Insects | 1 | |
| Jan-07 | Jackie Robinson | 1 | |
| Jan-98/04 | Jefferson | 17 | |
| June/July 1997 | Kings and Queens | 1 | |
| Feb-95 | Knights and Castles | 1 | |
| Apr-03 | Lakes | 1 | |
| Language | |||
| Feb-06 | Lungs | 1 | |
| Oct-00/03 | Maps | 16 | |
| Dec-01 | Marco Polo | 1 | |
| Apr-04 | Mark Twain | 1 | |
| Dec-98 | Mars | 1 | |
| Martin Luther King, Jr. | |||
| Mar-93/05 | Maya | 1 | |
| Jul-02 | Medicine | 1 | |
| Jun-05 | Mesopotamia | 25 | |
| Nov-05 | Mexico | 1 | |
| Dec-03 | Middle Ages | 1 | |
| Aug-02 | Mississippi River | 1 | |
| Money | |||
| Oct-01 | Moon | 1 | |
| Aug-05 | Mountains | 1 | |
| Jun-05 | Mummies | 1 | |
| Aug/Sept 1996 | Native America | 1 | |
| Jun-06 | Nutrition | 1 | |
| Mar-94 | Oil | 1 | |
| Pacific Rim | |||
| Mar-95 | Panama Canal | 1 | |
| Aug-99 | Pioneers | 1 | |
| Sep-04 | Plains Indians | 2 | |
| Oct-06 | Planets | 1 | |
| May-06 | Plants | 1 | |
| Sep-06 | Pompeii | 1 | |
| Dec-02 | Rain and Snow | 1 | |
| Dec-05 | Rain Forests | 1 | |
| Mar-05 | Revolutionary Women | 1 | |
| Feb-99 | Robots | 1 | |
| Apr-02 | Rocks | 1 | |
| Aug/Sept 1993 | Roman Empire | 13 | |
| Jan-02 | Sacagawea | 1 | |
| Nov-04 | Samurai | 16 | |
| Seven Wonders of the World | 15 | ||
| Sep-02 | Seventeen hundred seventy six | 1 | |
| Dec-06 | Shakespeare | 21 | |
| Mar-98 | Shelter | 1 | |
| Simple Machines | |||
| Oct-04 | Skin | 2 | |
| Oct-94 | Skyscrapers | 1 | |
| Jan-03 | Southwest Peoples | 1 | |
| Jan-93 | Space | 1 | |
| Nov-03 | Space Exploration | 1 | |
| Feb-03 | Spiders | 1 | |
| Feb-04 | Statue of Liberty | 1 | |
| Dec-04 | Suffragists | 1 | |
| Oct-02 | Sun | 1 | |
| Sep-05 | Teddy Roosevelt | 1 | |
| May-04 | Telescopes | 1 | |
| Mar-92 | Television | 1 | |
| Apr-06 | Titanic | 1 | |
| June/July 1996 | Tornados | 1 | |
| Nov-92 | Trains | 1 | |
| Jan-05 | Underground Railroad | 2 | |
| Venice | |||
| Nov-95 | Vikings | 2 | |
| May-05 | Volcanoes | 2 | |
| Sep-00 | Washington | 1 | |
| Jun-99 | Water | 1 | |
| Introductory 1994 | Weather | 1 | |
| Dec-97 | Wetlands | 1 | |
| Mar-03 | World War I | 1 | |
| World War II | |||
| May-98 | Yellowstone Park | 1 | |