You order some of the tribe to gather local berries that you know are edible, and get them to plant the seeds in the ground after they are eaten. For good measure, some of the fibrous plants are planted, too.
You send a couple of the other tribe members to scout the local area. They don't find anything of significance.
The tribe members that have nothing to do will often times go and catch fish from the lake to provide the tribe with food.
*fast forward 3 months*
turns out the pregnant woman had twins! There were no complications during childbirth.
*fast forward 6 months*
You see some people in the distance. They can't be part of your tribe, as all 11 adults and 2 children are in eyesight. They appear to be carrying simple wooden spears. You count three of them in total, their silhouettes seem to indicate one is injured and the other two are helping to carry them. You and the tribe gather around the edge of the camp they are approaching from, spears ready.
Once they arrive, they explain that they are the only survivors from a tribe that was attacked by another. Two of them managed to escape unharmed, but the other had a spear pierce their leg as they tried to run away. The cut is pus-filled and smells distinctly like rotting meat. They want to join your tribe.
plant condition: half have sprouted and are growing well in the soil.
The lion cubs are fully grown, and appear to have accepted your tribe as their pride.
Weapon: stone tipped spear (both hands), throwing spear (slung over back)
Clothing: Fur loincloth, fur belt, wooden mask, wooden breastplate
Other equipment: Knife, waterskin, makeshift chisel
Raw materials: none
Weapon: Stone tipped spears, throwing spears
Armour: Wooden breastplate, wooden mask
Equipment: makeshift chisel, knife, waterskin
Shelter and comforts: Moderate shelter, fire pit
Food: Hunting, Fishing (spears)
Agriculture: simple farming
numbers: 10 Adults, 2 Children
equipment: throwing spears, stone tipped spears, knives, belts, waterskins, masks, wooden breastplates, loincloths
Buildings: Permanent tents (2 people per tent), 1 fire pit.
research depends largely upon when that was discovered historically. I am, however, letting things be sped up, else we'd be stuck as a wandering tribe by the time I die.
And specialisation- you don't need technologies to specialise someone for advancing your knowledge e.t.c., but you would need more people than these twelve.