ALEX Classroom Resource

  

Reproduction: One Goal, Two Methods

  Classroom Resource Information  

Title:

Reproduction: One Goal, Two Methods

URL:

https://aptv.pbslearningmedia.org/resource/midlit10.sci.splrepro/reproduction-one-goal-two-methods/

Content Source:

PBS
Type: Interactive/Game

Overview:

In this interactive lesson, students learn about the advantages and disadvantages of the two basic forms of reproduction. Students develop their literacy skills as they scientifically explore sexual and asexual reproduction. During this process, they read informational text, learn and practice vocabulary words (reproduction, offspring, traits, clone, genes, natural selection), and explore content through video and interactive activities.

Content Standard(s):
Science
SC2015 (2015)
Grade: 7
Life Science
2 ) Gather and synthesize information to explain how prokaryotic and eukaryotic cells differ in structure and function, including the methods of asexual and sexual reproduction.


NAEP Framework
NAEP Statement::
L8.1e: All organisms are composed of cells, from one cell only to many cells. About two-thirds of the weight of cells is accounted for by water, which gives cells many of their properties. In multicellular organisms, specialized cells perform specialized functions. Organs and organ systems are composed of cells and function to serve the needs of cells for food, air, and waste removal. The way in which cells function is similar in all living organisms.

NAEP Statement::
L8.2: Following fertilization, cell division produces a small cluster of cells that then differentiate by appearance and function to form the basic tissues of an embryo.

NAEP Statement::
L8.9a: Reproduction is a characteristic of all living systems; because no individual organism lives forever, reproduction is essential to the continuation of every species.

NAEP Statement::
L8.9b: Some organisms reproduce asexually.

NAEP Statement::
L8.9c: Other organisms reproduce sexually.


Unpacked Content
Scientific And Engineering Practices:
Obtaining, Evaluating, and Communicating Information
Crosscutting Concepts: Structure and Function
Disciplinary Core Idea: From Molecules to Organisms: Structures and Processes
Evidence Of Student Attainment:
Students:
  • Gather and synthesize information with attention given to accuracy, credibility, and bias.
  • Explain, based on gathered information, the differences between prokaryotic and eukaryotic cells as they relate to structure, function, and methods of reproduction.
Teacher Vocabulary:
  • Cell
  • Prokaryotic cells
  • Eukaryotic cells
  • Structure
  • Function
  • Asexual reproduction
  • Sexual reproduction
  • Mitosis
  • Meiosis
  • Chromosome
  • DNA
Knowledge:
Students know:
  • Prokaryotic cells are microscopic, single-celled organisms that have neither a distinct nucleus with a membrane nor other specialized organelles.
  • Prokaryotes include the bacteria and cyanobacteria.
  • The function of prokaryotic cells.
  • The reproductive methods of prokaryotic cells.
  • Eukaryotic cells consist of a cell or cells in which the genetic material is DNA in the form of chromosomes contained within a distinct nucleus.
  • Eukaryotes include all living organisms other than the eubacteria and archaebacteria.
  • The function of eukaryotic cells.
  • The reproductive methods of eukaryotic cells.
Skills:
Students are able to:
  • Obtain information about cells, including structure, function, and method of reproduction, from published, grade-level appropriate material from multiple sources.
  • Determine and describe whether the gathered information is relevant.
  • Use information to explain how prokaryotic and eukaryotic cells differ.
Understanding:
Students understand that:
  • Prokaryotic and eukaryotic cells differ in structure and function, as well as method of reproduction.
AMSTI Resources:
AMSTI Module:
Investigating Biodiversity and Interdependence
Studying the Development and Reproduction of Organisms
Science
SC2015 (2015)
Grade: 7
Life Science
18 ) Construct an explanation from evidence that natural selection acting over generations may lead to the predominance of certain traits that support successful survival and reproduction of a population and to the suppression of other traits.


NAEP Framework
NAEP Statement::
L8.11a: Individual organisms with certain traits in particular environments are more likely than others to survive and have offspring.

NAEP Statement::
L8.11b: When an environment changes, the advantage or disadvantage of characteristics can change.

NAEP Statement::
L8.11c: Extinction of a species occurs when the environment changes and the characteristics of a species are insufficient to allow survival.


Unpacked Content
Scientific And Engineering Practices:
Constructing Explanations and Designing Solutions
Crosscutting Concepts: Cause and Effect
Disciplinary Core Idea: Unity and Diversity
Evidence Of Student Attainment:
Students:
  • Use multiple valid and reliable sources for evidence Construct an explanation of how natural selection affects the frequency of occurrence and distribution of traits in populations.
Teacher Vocabulary:
  • Explanation
  • Evidence
  • Evolution
  • Extinct
  • Extinction
  • Natural selection
  • Generation
  • Predominance
  • Heredity
  • Trait
  • Overproduction
  • Reproduction
  • Population
  • Suppression
  • Adaptation
  • Variation
Knowledge:
Students know:
  • Characteristics of a species change over time (i.e., over generations) through adaptation by natural selection in response to changes in environmental conditions.
  • Traits that better support survival and reproduction in a new environment become more common within a population within that environment.
  • Traits that do not support survival and reproduction as well become less common within a population in that environment.
  • When environmental shifts are too extreme, populations do not have time to adapt and may become extinct.
  • Multiple cause-and-effect relationships exist between environmental conditions and natural selection in a population.
  • The increases or decreases of some traits within a population can have more than one environmental cause.
Skills:
Students are able to:
  • Articulate a statement that relates a given phenomenon to a scientific idea, including natural selection and traits.
  • Identify and use multiple valid and reliable sources of evidence to construct an explanation for natural selection and its effect on traits in a population.
  • Use reasoning to connect the evidence and support an explanation for natural selection and its effect on traits in a population.
Understanding:
Students understand that:
  • Adaptation by natural selection acting over generations is one important process by which species change over time in response to changes in environmental conditions.
  • Traits that support successful survival and reproduction in the new environment become more common; those that do not become less common. Thus, the distribution of traits in a population changes.
AMSTI Resources:
AMSTI Module:
Studying the Development and Reproduction of Organisms

Alabama Alternate Achievement Standards
AAS Standard:
SCI.AAS.7.18- Recognize that healthy specimens of organisms live longer and reproduce in larger numbers than unhealthy specimens; recognize that natural selection may lead to the successful survival of a population by supporting certain traits and suppressing others.


Tags: animals, asexual, clone, genes, natural selection, offspring, reproduction, sexual, traits
License Type: Custom Permission Type
See Terms: https://aptv.pbslearningmedia.org/help/terms-of-use/#permitted
For full descriptions of license types and a guide to usage, visit :
https://creativecommons.org/licenses
AccessibilityText Resources: Content is organized under headings and subheadings
Comments

This is a student-directed lesson to be completed online. Download and print the Teacher's Guide (in "Teaching Tips") for essential background information and suggestions for ways to support students as they complete the lesson. 

Students need to be signed into their own account in order to save their work in the lesson. You will find detailed instructions on how to set up and manage accounts, class rosters, and assignments in the Help section. 

  This resource provided by:  
Author: Stephanie Carver