01. El Arte
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May 20, 1976
02. Poles North and South
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May 23, 1976
03. Mascaras
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May 24, 1976
04. Vamos a Bailar
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May 25, 1976
05. Solar Energy
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May 26, 1976
06. Numeros
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May 27, 1976
07. Las Islas
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May 30, 1976
08. Los Caminos
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May 31, 1976
09. Fiestas
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June 1, 1976
10. Sound and Waves
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June 2, 1976
11. Zero and More
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June 3, 1976
12. What's Inside the Earth?
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June 6, 1976
13. The Shape of Things
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June 7, 1976
14. Ships and Ports of Call
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June 8, 1976
15. What's a Language?
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June 9, 1976
16. Equal and Unequal
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June 10, 1976
17. The Shape of Things #2
No details
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June 13, 1976
18. Stored Energy
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June 14, 1976
19. Wings & Flying Things
No details
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June 15, 1976
20. Plebiscite for All
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June 16, 1976
21. Los muebles
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June 17, 1976
22. Bio-Degradable
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June 20, 1976
23. Where Do Animals Go?
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June 21, 1976
24. Las corrientes
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June 22, 1976
25. Lens, Shutters & Silver Salts
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June 23, 1976
26. Learning How
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June 24, 1976
27. What's Tropical?
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June 27, 1976
28. Automatico
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June 28, 1976
29. Horsemen of America
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June 29, 1976
30. Engine
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June 30, 1976
31. Energy Foods
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July 1, 1976
32. Changes That Don't Change
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July 4, 1976
33. Not Like Crayons
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July 5, 1976
34. Intercambio
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July 6, 1976
35. El Vuelo
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July 7, 1976
36. Measuring Up
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July 8, 1976
37. Maps, Charts, & Models
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July 11, 1976
38. Made from Metal
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July 12, 1976
39. What's Extinct?
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July 13, 1976
40. Social Responsibilities
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July 14, 1976
41. Eyes and Seeing Things
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July 15, 1976
42. Where Are You From?
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July 18, 1976
43. Sources of Food & Nutrients
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July 19, 1976
44. Picture Words
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July 20, 1976
45. Play Things
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July 21, 1976
46. From Scribblings to Caligraphy
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July 22, 1976
47. Angry Nature
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July 25, 1976
48. La musica
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July 26, 1976
49. Rules
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July 27, 1976
50. Invisible Workers
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July 28, 1976
51. Working with People
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July 29, 1976
52. Episode 52
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August 1, 1976
53. Episode 53
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August 2, 1976
54. Episode 54
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August 3, 1976
55. Energy Scales
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August 4, 1976
56. Episode 56
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August 5, 1976
57. Water Comes and Goes
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August 8, 1976
58. Pressing Prints
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August 9, 1976
59. Episode 59
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August 10, 1976
60. Gravity
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August 11, 1976
61. El Amor
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August 12, 1976
62. Episode 62
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August 15, 1976
63. Episode 63
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August 16, 1976
64. Episode 64
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August 17, 1976
65. Episode 65
No details
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August 18, 1976