01. Butterflies
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02. Seashells
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03. Laughter
Everyone in class is having an uproariously good time laughing at Professor Iris's disguises.
04. Bees
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05. Trains
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06. Flying Machines
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07. Hair
Ms. Principal is unhappy with her new hairstyle.
08. Elephants
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09. The Telephone
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10. Vacations
Everyone in class has a different suggestion on where they can spend their summer holiday together.
11. Horses
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12. Why Do I Cry?
Ms. Principal brings her baby to Professor Iris' class. This leaves everyone at a loss at trying to help the baby stop crying.
13. Cars
The class helps to spruce up a car that Ms. Principal is ready to display at an auto show.
14. Photography
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15. Minerals
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16. Jungle Animals
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17. The Farm
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18. Flowers
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19. Volcanoes
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20. The Kite
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21. Insects
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22. Evergreens
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23. Eggs
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24. Dogs
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25. I Play Dress-Up
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26. The Voice
In preparation for her concert, Ms. Principal joins Professor Iris in a loud-mouthed lecture on the voice.