Shinning up a tree, rolling down a grassy hill and cooking on a campfire are among a list of simple experiences cited to draw children away from computer games, and help them connect with nature.

The National Trust has called the list ’50 things to do before you’re 11¾’ and it outlines back to basic, fun activities such as building a den, flying a kite and hunting for frogspawn.

The list was compiled from ideas submitted by staff at National Trust homes, asked to ‘share their childhood memories which gave them a love of nature’.

It was released alongside research that shows less than one in ten British children have played in wild place compared to half of their parents’ generation.

Fiona Reynolds, director general of the National Trust, said many adults remember a time when, as children, they roamed around unsupervised all day – something unthinkable for many youngsters today.

She said: “Children today are completely unfamiliar with that feeling.

“They need to be given the confidence and the skills to go into the wood and build a den or climb a tree. The outdoors is a treasure trove, rich in imagination.

“It brings huge benefits that we believe every child should have the opportunity to experience. And there are huge costs when they don’t.”

Helen Meech, of the National Trust, said: “We wanted a mix of activities so younger children can get involved, but also harder ones for those near to 11¾.

“Research has shown it is important for children to have a love of nature before the age of 12.”

Take a look at the list below. How many have you done?

1. Climb a tree
2. Roll down a really big hill
3. Camp out in the wild
4. Build a den
5. Skim a stone
6. Run around in the rain
7. Fly a kite
8. Catch a fish with a net
9. Eat an apple straight from a tree
10. Play conkers
11. Throw some snow
12. Hunt for treasure on the beach
13. Make a mud pie
14. Dam a stream
15. Go sledging
16. Bury someone in the sand
17. Set up a snail race
18. Balance on a fallen tree
19. Swing on a rope swing
20. Make a mud slide
21. Eat blackberries growing in the wild
22. Take a look inside a tree
23. Visit an island
24. Feel like you’re flying in the wind
25. Make a grass trumpet
26. Hunt for fossils and bones
27. Watch the sun wake up
28. Climb a huge hill
29. Get behind a waterfall
30. Feed a bird from your hand
31. Hunt for bugs
32. Find some frogspawn
33. Catch a butterfly in a net
34. Track wild animals
35. Discover what’s in a pond
36. Call an owl
37. Check out the crazy creatures in a rock pool
38. Bring up a butterfly
39. Catch a crab
40. Go on a nature walk at night
41. Plant it, grow it, eat it
42. Go wild swimming
43. Go rafting
44. Light a fire without matches
45. Find your way with a map and compass
46. Try bouldering
47. Cook on a campfire
48. Try abseiling
49. Find a geocache
50. Canoe down a river