| 
    Abandoned and Escaped Animals
   | 
  
    
    
   | 
  
    5.9   | 
   | 
  
        
   | 
  | 
    Abejas útiles (Helpful Honeybees)
   | 
  
    
    
   | 
  
       | 
   | 
  
        
   | 
  | 
    A...B...Sea
   | 
  
    
    
   | 
  
    3.6   | 
   | 
  
        
   | 
  | 
    Acids and Bases
   | 
  
    
    
   | 
  
    6.2   | 
   | 
  
        
   | 
  | 
    A Class of their Own (6 titles)
   | 
  
    
    
   | 
  
       | 
   | 
  
        
   | 
  | 
    A Coral Reef
   | 
  
    
    
   | 
  
    6.4   | 
   | 
  
        
   | 
  | 
    Acorn to Oak Tree
   | 
  
    
    
   | 
  
    2.7   | 
   | 
  
        
   | 
  | 
    Adaptations
   | 
  
    
    
   | 
  
       | 
   | 
  
        
   | 
  | 
    A Desert Habitat
   | 
  
    
    
   | 
  
    2.8   | 
   | 
  
        
   | 
  | 
    A Dolphin's Body
   | 
  
    
    
   | 
  
    6.6   | 
   | 
  
        
   | 
  | 
    A Forest Habitat
   | 
  
    
    
   | 
  
    3.1   | 
   | 
  
        
   | 
  | 
    A Freshwater Pond
   | 
  
    
    
   | 
  
       | 
   | 
  
        
   | 
  | 
    A Grassland Habitat
   | 
  
    
    
   | 
  
    3.0   | 
   | 
  
        
   | 
  | 
    Aïe! Les serpents qui mordent (OUCH! Snakes That Bite)
   | 
  
    
    
   | 
  
       | 
   | 
  
        
   | 
  | 
    A Koala is Not a Bear!
   | 
  
    
    
   | 
  
    4.3   | 
   | 
  
        
   | 
  | 
    Albert Einstein
   | 
  
    
    
   | 
  
       | 
   | 
  
        
   | 
  | 
    All About Animals Close-Up (10 titles)
   | 
  
    
    
   | 
  
       | 
   | 
  
        
   | 
  | 
    Alligators
   | 
  
    
    
   | 
  
    1.3   | 
   | 
  
        
   | 
  | 
    Alligators! Big Teeth, Fierce Hunters
   | 
  
    
    
   | 
  
       | 
   | 
  
        
   | 
  | 
    Alone in the Arctic
   | 
  
    
    
   | 
  
    4.3   | 
   | 
  
        
   | 
  | 
    Amazing Ants
   | 
  
    
    
   | 
  
       | 
   | 
  
        
   | 
  | 
    Amazing Electricity
   | 
  
    
    
   | 
  
       | 
   | 
  
        
   | 
  | 
    Amazing Forces and Movement
   | 
  
    
    
   | 
  
       | 
   | 
  
        
   | 
  | 
    Amazing Light
   | 
  
    
    
   | 
  
       | 
   | 
  
        
   |