• Air: A First Film (1989)
• Air Pollution: A First Film (Revised) (1985)
• Animal Behavior: A First Film (1973)
• Animals Breathe in Many Ways (1964)
• Animals Hear in Many Ways (1968)
• Animals See in Many Ways (Revised) (1980)
• Ants: Backyard Science (Revised) (1978)
• The Aquarium: Classroom Science (1967)
• Backyard Science Series (197?)
• Bees: Backyard Science (revised) (1978)
• Beetles: Backyard Science (1967)
• Cells: A First Film (1970)
• Climate: A First Film (1985)
• Comprehension Skills Series (198?)
• Crickets: Backyard Science (1967)
• Drawing Conclusions (1984)
• Electricity: A First Film (1981)
• The Elephant Eats, the Penguin Eats: Nouns (1972)
• A First Film on Insects (1967)
• First Films Series (19??)
• Fish: A First Film (1986)
• Flight of Birds (1966)
• Following the Sequence (1981)
• Frogs: An Investigation (1972)
• Frogs Are Funny, Frogs Are Fat: Adjectives (1972)
• Gardening: An Introduction (1976)
• Getting the Facts (1984)
• Grasslands of the World (1978)
• How to Study Ecology: A First Film (1972)
• The Incubator: Classroom Science (1968)
• Insect Metamorphosis (1966)
• Land Pollution: A First Film (Revised) (1985)
• Monkey See, Monkey Do: Verbs (1971)
• Paragraphs with Ralph and Stanley (1979)
• Pets: A First Film (1979)
• Poisoning by Accident (1977)
• Poisonous Plants (1989)
• The Protist Kingdom (1965)
• Punctuation with Ralph and Stanley (1979)
• Rain: A First Film (1973)
• Reptiles: A First Film (1984)
• Sentences with Ralph and Stanley (1979)
• Ships: A First Film (1970)
• Snails: Backyard Science (Revised) (1979)
• Spiders: Backyard Science (Revised) (1978)
• Squirrels Are Up, Squirrels Are Down: Adverbials of Place (1972)
• Storms: An Introduction (1981)
• Symmetry: A First Film (1984)
• The Terrarium: Classroom Science (1967)
• Trains: A First Film (1969)
• Transportation: A First Film on the Airport (1972)
• The Turtle: The Care of a Pet (1962)
• Vocabulary Skills Series (1976)
• Water Pollution: A First Film (Revised) (1985)
• The Wetlands (1991)
• What Are Letters For: Initial Consonants (1972)
• What Do Flowers Do?: A First Film (1971)
• What Do Plants Do?: A First Film (1971)
• What Do Seeds Do?: A First Film (1970)
• What's an Animal? A First Film (1984)
• Word Wise: Antonyms (1977)
• Word Wise: Compound Words (1976)
• Word Wise: Homographs (1979)
• Word Wise: Homonyms (1977)
• Word Wise: Prefixes (1976)
• Word Wise: Root Words (1976)
• Word Wise: Suffixes (1976)
• Word Wise: Synonyms (1977)
• Word Wise: Word Families (1976)
• Writing Skills Series (197?)

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