 HAPPY WEDNESDAY 
• Turn in Homework (Cosmos Video Worksheet)
• Give me back your Project Handout.
• Bellwork: Quickwrite – Use the following in a 42 word
quickwrite explaining what you have learned about
Evolution so far.
Evolution
Adaptation
Fitness
Natural Selection
Darwin
Survival
Reproduction
Front
Vocabulary
Word
Definition of the word.
Back
A drawing that reminds you of the
definition of the word. (Must use at
least one color.)
Evolution Notecards
Pre-AP Biology
Due Friday (1/16/15)
• Adaptation •
• Biogeography
•
• Charles
Darwin
•
• Evolution
• Fossil Record •
• Gene Flow
•
• Gene Pool
•
• Genetic Drift
Genetic
Variation
Homologous
Structures
Migration
Natural
Selection
Speciation
Species
• Vestigial
Structure
• Artificial
Selection
• Fitness
• Theory
• Common
Descent
Evolution: Bean Lab
• The purpose of this lab is to understand
evolution by simulating the competition of
different birds for a common food source.
• Each student will simulate different beak shapes
(fingers, spoon, knife, and fork).
• In Charles Darwin’s On the Origin of Species, he
stated that individuals best suited for a specific
habitat will survive and pass their favorite traits
on to their offspring.
• In this lab, students that obtain the most food
will pass their beak shape to the next generation,
while the students with the least amount of food
will go extinct.
Problem: Which bird beak is the most
successful at catching prey in a certain
environment?
Hypothesis: Write a hypothesis predicting
which type of beak (fingers, spoon, knife, or
fork) will be the most successful in collecting
food.
If the beak type is a _____________,
then __________________________.
Procedure:
• Students will be divided into groups of 4. Each student represents a
different bird species with different shaped beaks. For the first trial,
one student will represent each beak shape: fork, spoon, knife, and
fingers.
• Spread the beans provided in the box in front of you. The beans
represent seeds which are the birds’ food.
• For thirty seconds, each bird removes beans, one at a time, from
the paper towel using only their beak (fingers, fork, spoon, or
knife). A couple things that must happen:
–
–
–
–
The box must remain still in the middle of the table
The food must be picked up and placed in your stomach (cup)
The stomach (cup) must remain on the table
You cannot steal from the competition
• After 30 seconds, count the number of beans each species has
eaten. Record the data in the data table.
• The bird with the least amount of beans goes extinct. That bird
must change its beak shape to the one who ate the most beans.
• Repeat this process two more times.
30 second Timer
Student Name:
Trial 1
Trial 1
Trial 2
Trial 2
Trial 3
Trial 3
Final
Beak shape
Beak
shape
Fingers
# of
beans
25
Beak
shape
Spoon
# of
beans
35
Beak
shape
Fork
Jessica
Fingers
# of
beans
25
Tom
Spoon
50
Spoon
51
Spoon
38
Spoon
Derrick
Fork
46
Fork
41
Fork
46
Fork
Lisa
Knife
4
Spoon
55
Spoon
42
Spoon
Prepare a line graph.
Use a different color line
for each species and provide a key.
-Graph Title: “Food collecting ability of four species of
bean eaters.”
-Y axis: # of beans collected
-X axis: Trial # (represents the generations)
-Lines: The graph will have 4 lines, one for each species
in different colors.
-Conclusion: Based on the results,
describe the change in the populations over 3
generations. Explain the relationship between ability
to gather food and the ability to survive.