Get documents about "Lesson Title
Document Sample
EVOLUTION UNIT CONCEPTUAL STORYLINE
Lesson Title Lesson 1 Lesson 2 Lesson 3
Introduction to change over time Bean variation and using Excel to analyze bean Dot predation activity (Evolution of
population data (Two 50-minute class periods) pigmentation simulation) (Two 50-minute
periods)
Guiding 1. What is evolution? 1. How do we measure a characteristic for an 1. How do variation, reproduction and
question(s): 2. How do we know evolution happens? entire population? inheritance, and environment contribute to the
2. How do we describe the amount of variation in a evolution of a population?
population?
What students Explore bacterial antibiotic resistance and whale Learn how to use Excel to 1) make a Students model natural selection using a
do… fossils to understand that change occurs in a histogram, 2) make a graph of two populations population that varies in pigmentation.
population over time. to compare their mean (average) sizes, and 3) Students analyze their data from the
express the amount of variation as standard simulation of natural selection.
deviation.
Students will show evidence of their
understanding by producing graphs from their
bean data.
What students Thousands of sedimentary rock layers A population can be described in terms of a The “typical-ness” (average) of a population
learn… provide evidence for the long history of single characteristic (what is a “typical” can be determined.
the earth, and the fossils they contain member).
demonstrate the long history of changing Variation can be quantitatively measured in a A typical characteristic of a population can
life forms. More recently deposited rock population. change over time.
layers are more likely to contain fossils Population statistics can be analyzed using How to determine the variation in a population
resembling existing species Excel to compare the variation between two Examine how an environment (habitat and
Fossils serve as evidence that organisms populations. Variation within a population is predator) affects the both the typical
like whales have changed over time. essential to understand the concept of characteristic and the variation in a population.
The absence of transitional fossils does evolution by natural selection. How a population has changed over time
not mean that evolution didn’t take place. (evolved) by:
Populations change over time. 1) Creating a histogram of each color present for
each generation.
2) Creating a graph of the average color of the
population for each generation.
Students explain how (1) variation, (2)
reproduction and inheritance, and (3) the
environment contribute to evolution of a
population.
EVOLUTION UNIT CONCEPTUAL STORYLINE
Lesson Title Lesson 4 Lesson 5
Evolution Notes Natural selection assessment and evolution notes
Guiding 1. How do variation, reproduction and inheritance, and 1. What are the conditions necessary for natural selection?
question(s): environment contribute to the evolution of a population? 2. What are the sources of genetic variation?
3. How do we define evolution in regards to the allele frequency and gene pool within a
population?
What students Relate the bean and dot population data to the Take notes on natural selection.
do… elements of natural selection.
Take notes on natural selection.
What students The conditions necessary for Natural Selection to occur The conditions necessary for Natural Selection to occur are; 1) variation in traits [allele
learn… are; 1) variation in traits [allele frequency] in a frequency] in a population, 2) inheritance [genetic basis of traits] 3) environmental
population, 2) inheritance [genetic basis of traits] 3) population limits [not all individuals born survive to reproduce] and, 4) selection
environmental population limits [not all individuals born [individuals with more advantageous traits survive to reproduce, individuals without
survive to reproduce] and, 4) selection [individuals with advantageous traits die before reproducing].
more advantageous traits survive to reproduce, The sources of genetic variation are sexual reproduction and mutation.
individuals without advantageous traits die before Evolution is the change in allele frequency in a gene pool.
reproducing].
EVOLUTION UNIT CONCEPTUAL STORYLINE
Lesson Title Lesson 6 Lesson 7
Practicing concepts in context- Kerosene Karl Theory and the nature of science-theory cube
Guiding 1. How does the allele frequency in a change pool change 1. Compare and contrast hypotheses and theories.
question(s): over time?
What students Students perform a simulation that simulates how the Students will make observations of a cube. With these observations, they will develop
do… allele frequency in a gene pool changes over time. hypotheses for the pattern that governs the cube.
The students will then develop predictions based upon their hypotheses for the unknown
sides of the cube.
Students will reevaluate/revise their hypotheses as new data becomes available.
What students Evolution is the change in allele frequency in a gene Evidence is used to support hypotheses and theories. The more evidence the stronger
learn… pool. the theory.
Inheritable attributes can be seen in many aspects of an Hypotheses may change as more evidence is produced.
organism, including its structure, biochemistry, or
behavior. These characteristics strongly influence an
organism’s capabilities to react, reproduce, and survive.
EVOLUTION UNIT CONCEPTUAL STORYLINE
Lesson Title Lesson 8 Lesson 9
Theory and the evidence for the Evidence-“Comparisons” or “Similarities”
theory of evolution by natural
selection
Guiding 1. What evidence do we have for the 1. What evidence of similarities between present day
question(s): theory of evolution? organisms exists to support the theory of evolution?
What Relate their learning of predictions, Take notes on the similarities that exist
students hypotheses, and theories to the between present-day organisms.
do… areas of evidence for the theory of
evolution.
What The theory of evolution has been If the theory of evolution is true, then the prediction
students tested thoroughly by comparing is that similarities must exist between present-day
learn… predictions with actual observations. organisms. 4 ways-homologous structures, vestigial
4 or the 6 areas of evidence for the structures, embryology, macromolecules.
theory of evolution by natural
selection: fossils, vestigial
structures, biogeography, and
homologous structures.
EVOLUTION UNIT CONCEPTUAL STORYLINE
Lesson Title Lesson 10 Lesson 11
Fossil-Biogeography Evidence for evolution-fossils/dating and
modeling radioactive decay (two 50-minute
periods)
Guiding 1. What is biogeography? 1. How do scientists determine the age of fossils?
question(s):
What Take an assessment on fossil Model the decay of radioactive isotopes in a
students evidence. sample using pop-beads
do… Read and answer questions about Construct a graph showing the decrease in the
biogeography. amount of a radioactive isotope over time.
Determine the half-life of the isotope by
analyzing your graph
What Biogeography is the study of the Fossils are the remains of plants or animals that
students geographical distribution of lived a long time ago.
learn… species, both present-day and Layers of sedimentary rock increase in age from
extinct top to bottom. Relative ages of fossils can be
determined according to which layer they are
found in.
Carbon-14 is a form (isotope) of carbon that
emits radiation which can be measured with
instruments.
Rates of radioactive decay for different isotopes
are compared in terms of their half-life.
A half-life is the amount of time it takes for one-
half of a sample of an isotope to decay.
