the discovery of jelly bellicus
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The Discovery of Jelly Bellicus. A tale of shipwreck and delicious beans Reproduced from Tieman & Haxer , 2007. Learning Goals. Even in the same species, there are differences between individuals Some variations are good, some are not so good. - PowerPoint PPT PresentationTRANSCRIPT
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The Discovery of Jelly Bellicus
A tale of shipwreck and delicious beansReproduced from Tieman & Haxer, 2007
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Even in the same species, there are differences between individuals
Some variations are good, some are not so good.
One kind of good variation helps organisms avoid being preyed upon
The environment helps determine what a “good variation” is.
Learning Goals
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Captain Dan and his crew were sailing from South America to Australia when they encountered a severe storm. The ship tossed in the sea for days before coming to rest on an island somewhere in the South Pacific. The ship was badly damaged and most of the supplies had fallen overboard during the storm. Dan and his crew were very hungry and the island didn’t promise much in the way of food.
Shipwreck!
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After looking around, the crew discovered tiny organisms hiding in the grass. They named them Jelly bellicus because the organisms reminded them of a sweet treat back home. Upon closer inspection the crew realized that there were eight different varieties of Jelly bellicus. The crew began gobbling up as many of the delicious critters as they could find.
Shipwreck!
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The crew split into three groups to find food on the island. The ground looked very different from one part of the island to the next.
Shipwreck!
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Jelly Bellicus Eight different specimens
◦ White◦ White w/spots◦ Red◦ Pink w/spots
◦ Tan w/spots◦ Light brown w/spots◦ Dark brown w/spots◦ Black
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Different TerrainsRed and dusty Beige and fluffy Grey and bumpy
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Arrange into three groups with appx equal numbers
Each group gets a bag of jelly beans In each bag:
◦ 10 of each colour◦ 80 beans total
Dump the bag of beans into the terrain and mix them up
Time to hunt!
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Each crew member can only use one hand to hunt
No picking up handfuls of terrain and sorting through
Wait for the signal before hunting All hunting stops when Captain Dan says so Don’t actually eat the beans! Ready?
Rules
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Record how many of each type of bean you found.
Which beans were easier to find? Which ones were harder to find? Why?
As a group, decide which jelly bean is the easiest, and which is the hardest to find. Make sure to write it down.
After the hunt
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Discussion Red and Dusty Group
◦ Easiest bean – Red and Pink◦ Hardest bean – Tan w/spots
Beige and Fluffy Group◦ Easiest bean – Black◦ Hardest bean - Pink
Grey and Bumpy Group◦ Easiest bean – Red◦ Hardest bean - Black
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Different colours do better in different environments, just like the beans.
What would happen to black rabbits in the grass? Brown rabbits in the snow?
Good thing there are different colours!
Real Life – Rabbits!
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Hawks like to eat rabbits! What might it look like to a hawk, way up high, to
see different colours of rabbits on the ground? Will some be easier to see than others? What might happen to the dark rabbits on the
green grass? If all the dark rabbits get eaten, how can they
have dark babies? There might not be very many dark rabbits left
on the green grass! Connection to computer model (foxes and
rabbits)
Hawks
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Mimicry – The red beans are poisonous!◦ Kids will probably avoid the pink beans too◦ Real-world connection to wasp mimics
◦ None of these insects can sting!
Variations in the Game
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Population Shift◦ After first round of hunting, surviving beans
reproduce◦ Have many rounds, many generations◦ Represent results in bar graph
Variations in the Game
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Simpler variations◦ Use only one type of terrain
This will reduce complexity◦ If you want to focus only on predation or selection
pressure◦ Could work up to the different terrains and real-
world connections
Variations in the Game
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Computer model Writing activity Multi-day activity?
Integration to Curriculum