| 1x01 | Jan. 14, 1980 | Noisy/Quiet: Production & Processing of Sound | | 1x02 | Jan. 15, 1980 | Noisy/Quiet: The Ear | | 1x03 | Jan. 16, 1980 | Noisy/Quiet: How People & Animals Use Sound | | 1x04 | Jan. 17, 1980 | Noisy/Quiet: Music | | 1x05 | Jan. 18, 1980 | Noisy/Quiet: Range of Vibration | | 1x06 | Mar. 24, 1980 | Forces and Motion | | 1x07 | Mar. 25, 1980 | Forces and Fields | | 1x08 | Mar. 26, 1980 | Forces: Buoyancy and Gravity | | 1x09 | Mar. 27, 1980 | Forces and Machines | | 1x10 | Mar. 28, 1980 | Forces: A Spectacle of Forces | | 1x11 | Mar. 10, 1980 | Growth/Decay: Sex and Seeds | | 1x12 | Mar. 11, 1980 | Growth/Decay: Human Growth | | 1x13 | Mar. 12, 1980 | Growth/Decay: Decay | | 1x14 | Mar. 13, 1980 | Growth/Decay: Human Cultures/Land Forms | | 1x15 | Mar. 14, 1980 | Growth/Decay: Cycles Upon Cycles | | 1x16 | Jan. 28, 1980 | Fast/Slow: Speed Up, Slow Down | | 1x17 | Jan. 29, 1980 | Fast/Slow: Rhythms of Nature | | 1x18 | Jan. 30, 1980 | Fast/Slow: Lifetimes | | 1x19 | Feb. 07, 1980 | Fast/Slow: Speed and Racing | | 1x20 | Feb. 01, 1980 | Fast/Slow: Time and Time Again | | 1x21 | Mar. 17, 1980 | Communication: Human Communication | | 1x22 | Mar. 18, 1980 | Communication: Animal Communication | | 1x23 | Mar. 19, 1980 | Communication: Machinery of Communication | | 1x24 | Mar. 20, 1980 | Communication with Other Species | | 1x25 | Mar. 21, 1980 | Communication: Feedback | | 1x26 | Feb. 04, 1980 | Food/Fuel: Animal Food | | 1x27 | Feb. 05, 1980 | Food/Fuel: Human Food | | 1x28 | Feb. 06, 1980 | Food/Fuel: Growing and Processing Food | | 1x29 | Feb. 07, 1980 | Food/Fuel: Fueling Machines | | 1x30 | Feb. 08, 1980 | Food/Fuel: The Sun Makes Everything Go | | 1x31 | Jan. 21, 1980 | Hot/Cold: People's Temperatures | | 1x32 | Jan. 22, 1980 | Hot/Cold: Animal and Plant Adaptations | | 1x33 | Jan. 23, 1980 | Hot/Cold: How Hot or Cold Can It Get? | | 1x34 | Jan. 24, 1980 | Hot/Cold: Heat and Work | | 1x35 | Jan. 25, 1980 | Hot/Cold: Temperatures on Earth/In Space | | 1x36 | Feb. 18, 1980 | Light/Dark: The Sun | | 1x37 | Feb. 19, 1980 | Light/Dark: Adaptation of Plants/Animals | | 1x38 | Feb. 20, 1980 | Light/Dark: Electromagnetic Spectrum | | 1x39 | Feb. 21, 1980 | Light/Dark: The Eye | | 1x40 | Feb. 22, 1980 | Light/Dark: Light Sources | | 1x41 | Mar. 03, 1980 | Near/Far: Seeing Isn't Always Believing | | 1x42 | Mar. 04, 1980 | Near/Far: Mapping and Navigating Near Home | | 1x43 | Mar. 05, 1980 | Near/Far: Mapping and Navigating Over Earth | | 1x44 | Mar. 06, 1980 | Near/Far: Space Travel | | 1x45 | Mar. 07, 1980 | Near/Far: Knowing Where You Are | | 1x46 | Mar. 31, 1980 | Order/Disorder: Regular Patterns | | 1x47 | Apr. 01, 1980 | Order/Disorder: The Body – An Ordered System | | 1x48 | Apr. 02, 1980 | Order/Disorder: Social Order | | 1x49 | Apr. 03, 1980 | Order/Disorder: Disordered | | 1x50 | Apr. 04, 1980 | Order/Disorder: Sum of Its Parts | | 1x51 | Apr. 07, 1980 | Surfaces: Protection | | 1x52 | Apr. 08, 1980 | Surfaces: Shapes and Functions at the Surface | | 1x53 | Apr. 09, 1980 | Surfaces: Surface Tension and Bubbles | | 1x54 | Apr. 10, 1980 | Surfaces: Surface of the Earth | | 1x55 | Apr. 11, 1980 | Surfaces: The Atmosphere—Skin of the Earth | | 1x56 | Feb. 25, 1980 | Big/Small: Animal Sizes/Scaling | | 1x57 | Feb. 26, 1980 | Big/Small: Animal Habitats | | 1x58 | Feb. 27, 1980 | Big/Small: Dinoaurs | | 1x59 | Feb. 28, 1980 | Big/Small: Volume & Efficiency | | 1x60 | Feb. 29, 1980 | Big/Small: How Big is Big? | | 1x61 | Feb. 11, 1980 | Crowded/Uncrowded: Human Crowding | | 1x62 | Feb. 12, 1980 | Crowded/Uncrowded: Optimum Populations in Nature | | 1x63 | Feb. 13, 1980 | Crowded/Uncrowded: Contrasts in Densities of Materials | | 1x64 | Feb. 14, 1980 | Crowded/Uncrowded: Down Among the Atoms (Liquids & Solids) | | 1x65 | Feb. 15, 1980 | Crowded/Uncrowded: Human Survival/Controlling Densities |
| 2x01 | Oct. 31, 1983 | Survival: Breathing | | 2x02 | Nov. 01, 1983 | Survival: Temperature | | 2x03 | Nov. 02, 1983 | Survival: Protection | | 2x04 | Nov. 03, 1983 | Survival: Energy | | 2x05 | Nov. 04, 1983 | Survival: Teamwork | | 2x06 | Oct. 24, 1983 | Sports: Training Analysis | | 2x07 | Oct. 25, 1983 | Sports: Time, Rate, Measurement | | 2x08 | Oct. 26, 1983 | Sports: Energy Transfer | | 2x09 | Oct. 27, 1983 | Sports: Impact Analysis | | 2x10 | Oct. 28, 1983 | Sports: Coordination | | 2x11 | Oct. 17, 1983 | Flight: Flying Animals | | 2x12 | Oct. 18, 1983 | Flight: Air Resistance | | 2x13 | Oct. 19, 1983 | Flight: Lift | | 2x14 | Oct. 20, 1983 | Flight: Thrust | | 2x15 | Oct. 21, 1983 | Flight: Acceleration | | 2x16 | Nov. 07, 1983 | Babies: The Code of Life | | 2x17 | Nov. 08, 1983 | Babies: Growth and Development | | 2x18 | Nov. 09, 1983 | Babies: Behavior | | 2x19 | Nov. 10, 1983 | Babies: Colonization | | 2x20 | Nov. 11, 1983 | Babies: Change | | 2x21 | Dec. 05, 1983 | Senses: Taste and Smell | | 2x22 | Dec. 06, 1983 | Senses: Sight | | 2x23 | Dec. 07, 1983 | Senses: Hearing | | 2x24 | Dec. 08, 1983 | Senses: Touch | | 2x25 | Dec. 09, 1983 | Senses: Special Sensors | | 2x26 | Nov. 21, 1983 | Shapes in Nature | | 2x27 | Nov. 22, 1983 | Shapes and Gravity | | 2x28 | Nov. 23, 1983 | Shapes: Streamlining | | 2x29 | Nov. 24, 1983 | Shapes: Form and Function | | 2x30 | Nov. 25, 1983 | Shapes: Clues | | 2x31 | Nov. 28, 1983 | Water: 3 Phases – Gas, Liquid, Solid | | 2x32 | Nov. 29, 1983 | Water: Medium for Life | | 2x33 | Nov. 30, 1983 | Water and People | | 2x34 | Dec. 01, 1983 | Water: Distribution | | 2x35 | Dec. 02, 1983 | Water in the Body | | 2x36 | Nov. 14, 1983 | Building: Materials | | 2x37 | Nov. 15, 1983 | Building: One of a Kind | | 2x38 | Nov. 16, 1983 | Building: Standard Parts | | 2x39 | Nov. 17, 1983 | Building: Modular | | 2x40 | Nov. 18, 1983 | Building: Communication |
| 3x01 | Oct. 22, 1984 | Space: Weightless | | 3x02 | Oct. 23, 1984 | Space: Getting There | | 3x03 | Oct. 24, 1984 | Space: Living There | | 3x04 | Oct. 25, 1984 | Space: Working There | | 3x05 | Oct. 26, 1984 | Space: Anybody Out There? | | 3x06 | Oct. 29, 1984 | Measurement: How Long? How Far? | | 3x07 | Oct. 30, 1984 | Measurement: What's the Area? What's the Volume? | | 3x08 | Oct. 31, 1984 | Measurement: How Heavy? How Dense? | | 3x09 | Nov. 01, 1984 | Measurement: How Many? How Much? | | 3x10 | Nov. 02, 1984 | Measurement: How Fast? How Slow? | | 3x11 | Nov. 05, 1984 | Earth is Change | | 3x12 | Nov. 06, 1984 | Earth: Maps | | 3x13 | Nov. 07, 1984 | Earth: Climate | | 3x14 | Nov. 08, 1984 | Earth: Flora and Fauna | | 3x15 | Nov. 09, 1984 | Earth: Building Models | | 3x16 | Nov. 12, 1984 | Electricity: What is It? | | 3x17 | Nov. 13, 1984 | Electricity and Magnetism | | 3x18 | Nov. 14, 1984 | Electricity: Where Do We Get It? | | 3x19 | Nov. 15, 1984 | Electricity Runs in a Circuit | | 3x20 | Nov. 16, 1984 | Electricity: You Are Electric |
| 4x01 | Sep. 23, 1985 | Tropics: Rubber | | 4x02 | Sep. 24, 1985 | Tropics: Metals | | 4x03 | Sep. 25, 1985 | Tropics: Rice | | 4x04 | Sep. 26, 1985 | Tropics: Working Animals – Monkeys and Elephants | | 4x05 | Sep. 27, 1985 | Tropics: Endangered Animals | | 4x06 | Sep. 30, 1985 | Light: From the Sun; To Your Eyes | | 4x07 | Oct. 01, 1985 | Light: Color | | 4x08 | Oct. 02, 1985 | Light: Eyes | | 4x09 | Oct. 03, 1985 | Light: How Animals See | | 4x10 | Oct. 04, 1985 | Light: Bending and Bouncing | | 4x11 | Oct. 07, 1985 | Farms: Sheep and Pigs – Selective Breeding | | 4x12 | Oct. 08, 1985 | Farms: Plants and Pigs – Plant Production | | 4x13 | Oct. 09, 1985 | Farms: Hybrids | | 4x14 | Oct. 10, 1985 | Farms: Cows and Pigs – Animal Products | | 4x15 | Oct. 11, 1985 | Farms: Chickens and Pigs – Animal Production | | 4x16 | Oct. 14, 1985 | Stuff: Metals | | 4x17 | Oct. 15, 1985 | Stuff: Clay | | 4x18 | Oct. 16, 1985 | Stuff: Shaping It | | 4x19 | Oct. 17, 1985 | Stuff: Feathers and Rubber | | 4x20 | Oct. 18, 1985 | Stuff: Using It |
| 5x01 | Sep. 22, 1986 | Signals: Lingo | | 5x02 | Sep. 23, 1986 | Signals: Talking Birds, Talking Rooms | | 5x03 | Sep. 24, 1986 | Signals: Looking for Visual Clues | | 5x04 | Sep. 25, 1986 | Signals: Getting Them Around | | 5x05 | Sep. 26, 1986 | Signals: Cracking Codes | | 5x06 | Sep. 29, 1986 | Oceans: On the Sea | | 5x07 | Sep. 30, 1986 | Oceans: In the Sea | | 5x08 | Oct. 01, 1986 | Oceans: From the Sea | | 5x09 | Oct. 02, 1986 | Oceans: By the Sea | | 5x10 | Oct. 03, 1986 | Oceans: Of the Sea | | 5x11 | Oct. 06, 1986 | Motion: What's Up? | | 5x12 | Oct. 07, 1986 | Motion: Bones | | 5x13 | Oct. 08, 1986 | Motion: Smashing | | 5x14 | Oct. 09, 1986 | Motion: Getting a Grip | | 5x15 | Oct. 10, 1986 | Motion: Heave Ho! | | 5x16 | Oct. 13, 1986 | Eating: Tooth Detectives | | 5x17 | Oct. 14, 1986 | Eating: Picky Eaters | | 5x18 | Oct. 15, 1986 | Eating: Zoo Food | | 5x19 | Oct. 16, 1986 | Eating: Down the Hatch | | 5x20 | Oct. 17, 1986 | Eating: Leftovers |
| 6x01 | Oct. 12, 1987 | Japan: Precious Oysters, Rare Salamanders | | 6x02 | Oct. 13, 1987 | Japan: Landslide! | | 6x03 | Oct. 14, 1987 | Japan: Paper and Kites | | 6x04 | Oct. 15, 1987 | Japan: Earthquake! | | 6x05 | Oct. 16, 1987 | Japan: Judo and Computers | | 6x06 | Oct. 19, 1987 | Detectives: Skin and Bone Detectives | | 6x07 | Oct. 20, 1987 | Detectives: Tool and Trash Detectives | | 6x08 | Oct. 21, 1987 | Detectives: Wildlife Detectives | | 6x09 | Oct. 22, 1987 | Detectives: Dinosaur Detectives | | 6x10 | Oct. 23, 1987 | Detectives: Pattern Detectives | | 6x11 | Oct. 26, 1987 | Architecture: Raising the Big Top | | 6x12 | Oct. 27, 1987 | Architecture: Home | | 6x13 | Oct. 28, 1987 | Architecture: Stack It Up | | 6x14 | Oct. 29, 1987 | Architecture: Made to Fit | | 6x15 | Oct. 30, 1987 | Architecture: Light But Strong | | 6x16 | Nov. 02, 1987 | Mammals: Rats and Bats | | 6x17 | Nov. 03, 1987 | Mammals: Keeping Warm | | 6x18 | Nov. 04, 1987 | Mammals: Live Birth, Warm Milk | | 6x19 | Nov. 05, 1987 | Mammals at Play | | 6x20 | Nov. 06, 1987 | Big Mammals: The High Cost of Living | | 6x21 | Nov. 09, 1987 | Modeling: Things on Wheels | | 6x22 | Nov. 10, 1987 | Modeling: Through Ice and Air | | 6x23 | Nov. 11, 1987 | Modeling: The Earth | | 6x24 | Nov. 12, 1987 | Modeling: Knees and Small Things | | 6x25 | Nov. 13, 1987 | Modeling: Spaces | | 6x26 | Nov. 16, 1987 | In the Air: Finding Your Way | | 6x27 | Nov. 17, 1987 | In the Air: Drifting with the Wind | | 6x28 | Nov. 18, 1987 | In the Air: Born to Fly | | 6x29 | Nov. 19, 1987 | In the Air: Fat Things That Fly | | 6x30 | Nov. 20, 1987 | In the Air: Unbelievable Flying Objects |
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