Let's Visit the Grassland

Tooth by Tooth: Comparing Fangs, Tusks, and Chompers

Shells

What Is Sight?

Active Minds Collection: Kids Ask About REPTILES! (Unabridged)

Vibrations Make Sound

Eye by Eye: Comparing How Animals See

The Energy That Warms Us: A Look at Heat

Endangered and Extinct Invertebrates

What Is Smell?

Skin

Sending Messages with Light and Sound

What Floats? What Sinks?: A Look at Density

Loud or Soft? High or Low?: A Look at Sound

Eye Color: Brown, Blue, Green, and Other Hues

Facial Features: Freckles, Earlobes, Noses, and More

Vision: Nearsightedness, Farsightedness, and More

Many Ways to Move: A Look at Motion

What Is Severe Weather?