http://www.greenfoot.org/scenarios/11899
* Java needs to be installed on your computer.
1. Please run the simulation for three times and discuss with your classmates if there is any difference among the simulations.
Please read the following article and answer the following question:
Trail Pheromone
Certain ants, as they return to the nest with food, lay down a trail pheromone. This trail attracts and guides other ants to the food. It is continually renewed as long as the food holds out. When the supply begins to dwindle, trailmaking ceases. The trail pheromone evaporates quickly so other ants stop coming to the site and are not confused by old trails when food is found elsewhere. And at least in one species of ant, trails that no longer lead to food are also marked with a repellant pheromone.A stick treated with the trail pheromone of an ant (left) can be used to make an artificial trail which is followed closely by other ants emerging from their nest (right). The trail will not be maintained by other ants unless food is placed at its end. (Photos courtesy of Sol Mednick and Scientific American).
1. What is the name of the yellow path you see in the simulation?
2. Do the yellow paths evaporate? When?
3. Challenge: If we delay the evaporation, what will happen? Let's change the source code to see if your guess is correct.
2. Traffic simulation - 4 Way and Round about
4 Way or Round About??
http://www.wimp.com/testroundabout/
Round about Simulation:
3. Simple Weather Simulation at Scratch
