3 things you'd show a Na'vi.

[Moco Loco]

1) If a stack of my favorite books can count as one thing, but that would be more of a gift
2) Fried superworms, again more of a gift
3) The internet

They're not the best things ever but it would at least be a fun day.

[TEAgaming2154]

You know, I actually had a dream the other night like this. Na'vi on earth (one of them me). In summary, I forgot how things work here, I met some old friends (scared the crap out of them), and I was sent back to Pandora.

[Cyvaris]

1. Alien

2. Aliens

3. Starship Troopers

Why yes, these are accurate stories about our culture and its interactions with other species....why do you ask?

[Clarke]

Originally Posted by ISV Venture Star

I'd show them Earth's medicine, education, roads...

...oh wait.

So you'd show them the sanitation and medicine and education and irrigation and public health and roads and the freshwater infrastructure and baths and public order and everything else the humans could do for them?

1) Wikipedia and/or the British Library (or other similarly large research-level library)
2) A large, fully stocked iPod... and some implication that this is the barest fraction of our culture.
3) Cosmos

Originally Posted by Cyvaris

1. Alien

2. Aliens

3. Starship Troopers

Why yes, these are accurate stories about our culture and its interactions with other species....why do you ask?

Oh, right. 4) Jeff Wayne's Musical Version of the War of the Worlds.
With a note at the end: "We've done our biology research."

[Cyvaris]

Originally Posted by Clarke

So you'd show them the sanitation and medicine and education and irrigation and public health and roads and the freshwater infrastructure and baths and public order and everything else the humans could do for them?

What have the humans ever done for us! Apart from the wine!

[Du'tey]

1. music (ex dubstep, rock, classical, ect.)
2. digital art
3. mass effect

[allroock123]

It's likely a Na'vi on earth would die from the air in our atmosphere without the equivalent of Pandorian atmosphere exopack besides a visit to earth would be a very painful emotional experience for person from Na'vi worldview "Ethos"

The 3 things I would show them.
1. That some sky people on earth are truly able to "See"
2. introduce them to our native peoples (very strong commonality here)
3. give them an opportunity to share voices with our people.

[TEAgaming2154]

Originally Posted by allroock123

It's likely a Na'vi on earth would die from the air in our atmosphere without the equivalent of Pandorian atmosphere exopack besides a visit to earth would be a very painful emotional experience for person from Na'vi worldview "Ethos"

Well, since the Pandoran atmosphere has a large amount of carbon dioxide (17% I think), which asphyxiates a human. The oxygen levels a significant as well. However, there is a 1% concentration of hydrogen sulfide, which is toxic to humans. Unless the Na'vi somehow need hydrogen sulfide and carbon dioxide, they should be fine here on Earth, just breathing heavier air. They would most likely not be able to perform strenuous physical activity due to the lower oxygen levels here on Earth.

Also there would be nothing here to do tsaheylu with. No direhorses, no banshees, and no willow groves.

About the atmosphere thing, I did some research. About the "very painful emotional experience" thing, I totally agree with you.

[Ja'k Dawsiin]

Originally Posted by Mother of the Forest

1. Redwoods
2. Native American culture (and/or other indigenous cultures)
3. Certain pieces of music

this

[Raiden]

Originally Posted by allroock123

It's likely a Na'vi on earth would die from the air in our atmosphere without the equivalent of Pandorian atmosphere exopack besides a visit to earth would be a very painful emotional experience for person from Na'vi worldview "Ethos"

The 3 things I would show them.
1. That some sky people on earth are truly able to "See"
2. introduce them to our native peoples (very strong commonality here)
3. give them an opportunity to share voices with our people.

No, they'd probably be fine here.

The only thing that sticks out to me is the difference in CO2 concentration. When CO2 dissolves in water, it forms carbonic acid, which donates hydrogen ions to the water, making it more acidic. Organisms can only survive if they can keep the interior of their cells, tissues, and organs stable, and this includes regulating the pH of the fluid in this interior.

Animals and other organisms here use an array of buffering agents to keep their blood/conductive fluid pH within a very narrow range. This, combined with what I said about carbonic acid, is why holding one's breath for very long periods of time can be dangerous; your cells are still generating CO2, but you are not exhaling it, and so it is building up in your bloodstream. The buffering agents (mostly bicarbonates) can keep the pH stable for a while, but past a certain point they become saturated with hydrogen ions (buffering agents literally act as sponges for hydrogen ions) and the blood pH falls, which becomes lethal very quickly. This is part of the reason why Pandora's atmosphere is toxic to Earth animals (the H2S is the other reason).

So, taking this into account, if the atmosphere on Pandora has a higher CO2 concentration, the Na'vi might have a lower blood pH range than we do. If this is true, they could have the opposite problem, and they would need to be careful not do anything that could raise their blood pH (such as hyperventilating), because they may not have buffers to reduce the pH if the atmosphere keeps their blood pH lower for them.

Anyway...

Everything is the same with the exception of the H2S and CO2. There would be a pressure difference, and this could cause problems if they spent a long time breathing our atmosphere, but aside from the blood pH thing, they should be fine.

On topic:

1) Ice, snow or any kind of frozen food (ice cream, fruit smoothies, etc.)

2) Fossils

3) Deserts

I picked #1 and #3 because Pandora has miniscule ice caps that may not be present year round and it is probably too small a world to have true deserts.

[Smirnoff]

Alright, for first I would take them on a this kind of trip https://www.youtube.com/watch?v=0n5OmQzy5qI

2-Of course music,groups like Metallica,Iron Maiden etc. and some dance music or maybe I would take them to a club and show them how tawtute having fun

3-Mountains,sea,and a big city Im really wondering how they would find a big crowded city with tall buildings.