Readers, Advanced. Insect and spiders / Clara Morales -- Epidemic / Lillian Duggan -- Continuing the species / Beth Parlikar -- Body imaging / Mary McLean-Hely -- Top crops / Patricia Walsh -- Forests around the world / Charles Miller -- Predator and prey / Kristin Cashore -- Ring of fire / Barbara Fierman -- Down to Earth / Jennifer Coates-Conroy -- Caves / Lillian Duggan -- Green homes / Charles Miller -- Solar power / Lillian Duggan -- Atoms / Sam Brelsfoard -- Acids and bases / Grace Ng -- Zero gravity / Steve Miller -- Levers, gears, and pulleys / Alma Ransford -- Sports champions / Natalie Goldstein -- The science of cooking / Sara Bright -- Many moons / Steve Miller -- Following the stars / Patricia Walsh -- The space race / Grace Ng.
Readers, Below level. Classification / Erin Rogers -- Cells / Marcia K. Miller -- Reproduction / Mary McLean-Hely -- Body systems / Erin Rogers -- Plants / Kelly Kong -- Biomes / Natalie Goldstein -- Ecosystems / Martin E. Lee -- Plate tectonics / Mary Miller -- Rocks and minerals / Marcia K. Miller -- Reshaping Earth's surface / Martin E. Lee -- Earth's resources / Natalie Rompella -- Climate and weather / Carol Levine -- Matter / Marcia K. Miller -- Building blocks of matter / Lillian Duggan -- Forces and motion / Marcia K. Miller -- Machines ; Changing energy forms / Lillian Duggan -- Thermal and light energy / Kim Calamia -- Earth, Sun, and Moon / Carol Levine -- The universe / Marcia K. Miller -- Technology / Martin E. Lee.
Readers, On level. Classifying living organisms / Mary Walsh -- Parts of cells / Mary McLean-Hely -- Reproduction of species / Jennifer Coates-Conroy -- Systems of the body / Kara Black -- Plant processes / Jean Szeto -- Life in the biosphere / Steve Miller -- Earth's ecosystems / Laura Johnson -- Earth's layers / Emily Gray -- Minerals and rock / Lucy Ann Sibson -- The ever-changing surface of Earth / L.L. Owens -- Resources on Earth / Donna Latham -- Earth's climate and weather / Colin Kong -- Structure of matter / Colin Kong -- Properties of matter / Lillian Duggan -- The effect of forces / Natalie Rompella -- The use of machines / L.L. Owens -- Energy / Peggy Bresnick Kendler -- Energy from heat and light / L.L. Owens -- Sun, Earth, and Moon / Mary F. Blehl -- Exploring the universe / Jane Green -- The uses of technology / Natalie Rompella.