├─01.初级核心阅读【32本】
│      All Together Now-420L.pdf
│      All Together Now-540L.pdf
│      All Together Now-710L.pdf
│      All Together Now-840L.pdf
│      Amazing Plants-450L.pdf
│      Amazing Plants-570L.pdf
│      Amazing Plants-710L.pdf
│      Amazing Plants-820L.pdf
│      Birthday Celebrations-450L.pdf
│      Birthday Celebrations-570L.pdf
│      Birthday Celebrations-720L.pdf
│      Birthday Celebrations-840L.pdf
│      Dinosaurs-410L.pdf
│      Dinosaurs-530L.pdf
│      Dinosaurs-680L.pdf
│      Dinosaurs-840L.pdf
│      Forces of Nature-450L.pdf
│      Forces of Nature-580L.pdf
│      Forces of Nature-720L.pdf
│      Forces of Nature-810L.pdf
│      Make a Difference-430L.pdf
│      Make a Difference-550L.pdf
│      Make a Difference-690L.pdf
│      Make a Difference-840L.pdf
│      Mixed-Up Matter-380L.pdf
│      Mixed-Up Matter-490L.pdf
│      Mixed-Up Matter-640L.pdf
│      Mixed-Up Matter-800L.pdf
│      Onward-400L.pdf
│      Onward-490L.pdf
│      Onward-670L.pdf
│      Onward-820L.pdf
│
├─02.初级自然科学【30本】
│      Hidden Discoveries-530L.pdf
│      Hidden Discoveries-650L.pdf
│      Hidden Discoveries-790L.pdf
│      Keep Outl Keep Away-580L.pdf
│      Keep Outl Keep Away-690L.pdf
│      Keep Outl Keep Away-780L.pdf
│      Ladders-Earth Science-Big Storm-580L.pdf
│      Ladders-Earth Science-Big Storm-720L.pdf
│      Ladders-Earth Science-Big Storm-810L.pdf
│      Ladders-Earth Science-Cool Caves-590L.pdf
│      Ladders-Earth Science-Cool Caves-740L.pdf
│      Ladders-Earth Science-Cool Caves-840L.pdf
│      Ladders-Earth Science-Destination Space-610L.pdf
│      Ladders-Earth Science-Destination Space-710L.pdf
│      Ladders-Earth Science-Destination Space-860L.pdf
│      Ladders-Earth Science-Eruption-590L.pdf
│      Ladders-Earth Science-Eruption-700L.pdf
│      Ladders-Earth Science-Eruption-810L.pdf
│      Ladders-Earth Science-Roller Coasters-570L.pdf
│      Ladders-Earth Science-Roller Coasters-710L.pdf
│      Ladders-Earth Science-Roller Coasters-860L.pdf
│      On Assignment with Joel Sartore-600L.pdf
│      On Assignment with Joel Sartore-710L.pdf
│      On Assignment with Joel Sartore-820L.pdf
│      Tricks,Traps,and Tools-550L.pdf
│      Tricks,Traps,and Tools-680L.pdf
│      Tricks,Traps,and Tools-810L.pdf
│      Tropical Rain Forest Adventure-620L.pdf
│      Tropical Rain Forest Adventure-720L.pdf
│      Tropical Rain Forest Adventure-810L.pdf
│
├─03.初级社会科学【21本】
│      Brazil-590L.pdf
│      Brazil-690L.pdf
│      Brazil-810L.pdf
│      India-540L.pdf
│      India-640L.pdf
│      India-790L.pdf
│      Kenya-600L.pdf
│      Kenya-720L.pdf
│      Kenya-820L.pdf
│      Living by the Water-600L.pdf
│      Living by the Water-710L.pdf
│      Living by the Water-840L.pdf
│      Living in the Desert-570L.pdf
│      Living in the Desert-710L.pdf
│      Living in the Desert-830L.pdf
│      Living on the Coast-600L.pdf
│      Living on the Coast-700L.pdf
│      Living on the Coast-830L.pdf
│      Living on the Plains-550L.pdf
│      Living on the Plains-680L.pdf
│      Living on the Plains-840L.pdf
│
├─04.中级核心阅读【20本】
│      01 The Quest!.pdf
│      02.pdf
│      03.pdf
│      04.pdf
│      05 Moon Mysteries!.pdf
│      06.pdf
│      07.pdf
│      08.pdf
│      09 Lend Me a Paw!.pdf
│      10.pdf
│      11.pdf
│      12.pdf
│      13 Nature's Genius!.pdf
│      14.pdf
│      15.pdf
│      16.pdf
│      17 Worth Saving!.pdf
│      18.pdf
│      19.pdf
│      20.pdf
│
├─05.中级自然科学【30本】
│      01 The Chesapeake Bay!.pdf
│      02.pdf
│      03.pdf
│      04 Let's Cook!.pdf
│      05.pdf
│      06.pdf
│      07 Pattems!.pdf
│      08.pdf
│      09.pdf
│      10 Weird but True!.pdf
│      11.pdf
│      12.pdf
│      13 Let's Keep Moving!.pdf
│      14.pdf
│      15.pdf
│      16 Super Structures!.pdf
│      17.pdf
│      18.pdf
│      19 Tim Samaras.pdf
│      20.pdf
│      21.pdf
│      22 Exploring Coral Reefs!.pdf
│      23.pdf
│      24.pdf
│      25 At the Movies!.pdf
│      26.pdf
│      27.pdf
│      28 Smart Animals!.pdf
│      29.pdf
│      30.pdf
│
├─06.中级社会科学【39本】
│      Empire State Building-1.pdf
│      Empire State Building-2.pdf
│      Empire State Building-3.pdf
│      Golden Gate Bridge-1.pdf
│      Golden Gate Bridge-2.pdf
│      Golden Gate Bridge-3.pdf
│      Great Lakes-1.pdf
│      Great Lakes-2.pdf
│      Great Lakes-3.pdf
│      Great Plains-1.pdf
│      Great Plains-2.pdf
│      Great Plains-3.pdf
│      Gulf Coast-1.pdf
│      Gulf Coast-2.pdf
│      Gulf Coast-3.pdf
│      Mount Rushmore-1.pdf
│      Mount Rushmore-2.pdf
│      Mount Rushmore-3.pdf
│      Native Americans of the Great Plains-1.pdf
│      Native Americans of the Great Plains-2.pdf
│      Native Americans of the Great Plains-3.pdf
│      Native Americans of the Pacific Northwest-1.pdf
│      Native Americans of the Pacific Northwest-2.pdf
│      Native Americans of the Pacific Northwest-3.pdf
│      Native Americans of the Southeast-1.pdf
│      Native Americans of the Southeast-2.pdf
│      Native Americans of the Southeast-3.pdf
│      Native Americans of the Southwest-1.pdf
│      Native Americans of the Southwest-2.pdf
│      Native Americans of the Southwest-3.pdf
│      Niagara Fals-1.pdf
│      Niagara Fals-2.pdf
│      Niagara Fals-3.pdf
│      North Atlantic Coast-1.pdf
│      North Atlantic Coast-2.pdf
│      North Atlantic Coast-3.pdf
│      Pacific Coast-1.pdf
│      Pacific Coast-2.pdf
│      Pacific Coast-3.pdf
│
├─07.高阶核心阅读【24本】
│      Catch the Light-670L.pdf
│      Catch the Light-790L.pdf
│      Catch the Light-920L.pdf
│      Catch the Light-990L.pdf
│      Connections to Nature-1010L.pdf
│      Connections to Nature-750L.pdf
│      Connections to Nature-860L.pdf
│      Connections to Nature-940L.pdf
│      Moving Into the Future-1000L.pdf
│      Moving Into the Future-780L.pdf
│      Moving Into the Future-830L.pdf
│      Moving Into the Future-920L.pdf
│      The Old West-630L.pdf
│      The Old West-780L.pdf
│      The Old West-890L.pdf
│      The Old West-980L.pdf
│      Transformers-700L.pdf
│      Transformers-790L.pdf
│      Transformers-890L.pdf
│      Transformers-990L.pdf
│      Watery World-730L.pdf
│      Watery World-800L.pdf
│      Watery World-900L.pdf
│      Watery World-980L.pdf
│
├─08.高阶自然科学【30本】
│      African Savanna-1.pdf
│      African Savanna-2.pdf
│      African Savanna-3.pdf
│      Earth's Crazy Climate-1.pdf
│      Earth's Crazy Climate-2.pdf
│      Earth's Crazy Climate-3.pdf
│      Exploring Above and Beyond-1.pdf
│      Exploring Above and Beyond-2.pdf
│      Exploring Above and Beyond-3.pdf
│      Going Green-1.pdf
│      Going Green-2.pdf
│      Going Green-3.pdf
│      Nature Has the Answers-1.pdf
│      Nature Has the Answers-2.pdf
│      Nature Has the Answers-3.pdf
│      Power Up-1.pdf
│      Power Up-2.pdf
│      Power Up-3.pdf
│      The Disappearing Badlands-1.pdf
│      The Disappearing Badlands-2.pdf
│      The Disappearing Badlands-3.pdf
│      The Galdpagos Ilslands-1.pdf
│      The Galdpagos Ilslands-2.pdf
│      The Galdpagos Ilslands-3.pdf
│      The Sinking of the Titanic-1.pdf
│      The Sinking of the Titanic-2.pdf
│      The Sinking of the Titanic-3.pdf
│      The World's Ocean-1.pdf
│      The World's Ocean-2.pdf
│      The World's Ocean-3.pdf
│
└─09.高阶社会科学【33本】
Big Bend National Park-1.pdf
Big Bend National Park-2.pdf
Big Bend National Park-3.pdf
Everglades National Park-1.pdf
Everglades National Park-2.pdf
Everglades National Park-3.pdf
Grand Canyon National Park-1.pdf
Grand Canyon National Park-2.pdf
Grand Canyon National Park-3.pdf
Great Smoky Mountains National Park-1.pdf
Great Smoky Mountains National Park-2.pdf
Great Smoky Mountains National Park-3.pdf
The Azte-1.pdf
The Azte-2.pdf
The Azte-3.pdf
The Declaration of Independence-1.pdf
The Declaration of Independence-2.pdf
The Declaration of Independence-3.pdf
The Inca-1.pdf
The Inca-2.pdf
The Inca-3.pdf
The Maya-1.pdf
The Maya-2.pdf
The Maya-3.pdf
The Pueblo-1.pdf
The Pueblo-2.pdf
The Pueblo-3.pdf
Yellowstone National Park-1.pdf
Yellowstone National Park-2.pdf
Yellowstone National Park-3.pdf
Yosemite National Park-1.pdf
Yosemite National Park-2.pdf
Yosemite National Park-3.pdf