Download Grade 7 Unit 2 Bend 3 Organisms

Science
Grade 7
Unit 7
Grade 7
Unit 2 Bend 3
Organisms:
Heredity: Inheritance, and Variation of Traits
Table of Contents
Section
Page Number
Unit Prelude
Unit Learning Outcomes
Unit Language
Assessment Tools
Learning Activities
S.T.E.M Evaluation of Unit
Blank Unit Calendar
Unit Inventories
Background Information:
Appendix A
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Unit Completed by:
Date:
Science
Grade 7
Unit 7
Prelude to the Unit:
Bend Description
In this bend, students will use their understanding of the structure of chromosomes to develop and use a model to
describe the difference in genetic variation between asexual reproduction and sexual reproduction. Then develop
and use models to describe the effects of genetic mutations.
Student expected prerequisite knowledge
Common student misconceptions
 LS1.A (3-5) Reproduction is essential to every kind of
organism. Organisms have unique and diverse life
cycles.
 LS1.B (3-5) Reproduction is essential to every kind of
organism. Organisms have unique and diverse life
cycles.
 LS3.B (3-5) Different organisms vary in how they look
and function because they have different inherited
information; the environment also affects the traits
that an organism develops.
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Unit Completed by:
Date:
Science
Grade 7
Unit 7
Unit Learning Outcomes
Unit Title:
Bend
Description:
Disciplinary
Core Ideas:
Standards:
Grade 1
Unit Length
Content Unit 7
Heredity: Inheritance, and Variation of Traits
In this bend, students will use their understanding of the structure of chromosomes to develop and use a
model to describe the difference in genetic variation between asexual reproduction and sexual
reproduction. Then develop and use models to describe the effects of genetic mutations.
LS1.B: Growth and Development of Organisms
 Organisms reproduce, either sexually or asexually, and transfer their genetic information to their
offspring.
LS1.A: Inheritance of Traits
 Genes are located in the chromosomes of cells, with each chromosome pair containing two variants
of each of many distinct genes. Each distinct gene chiefly controls the production of specific proteins,
which in turn affects the traits of the individual. Changes (mutations) to genes can result in changes in
proteins, which can affect the structures and functions of the organism, and thereby change traits.
 Variations of inherited traits between parent and offspring arise from genetic differences that result
from a subset of chromosomes (and therefore genes) inherited.
LS3.B: Variation of Traits
 In sexually reproduced organisms, each parent contributes half of the genes required (at random) by
the offspring. Individuals have two of each chromosome and hence two alleles of each gene, one
acquired from each parent. These versions may be identical or may be different from each other.
 In addition to variations that arise from sexual reproduction, genetic information can be altered
because of mutations. Though rare, mutations may result in changes to the structure and function of
proteins. Some changes are beneficial, others harmful, and some neutral to the organism.
MS-LS3-1*: Develop and use a model to describe why structural changes to genes (mutations)
located on chromosomes may affect proteins and may result in harmful, beneficial, or neutral
effects to the structure and function of the organism.
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Unit Completed by:
Date:
Science
Grade 7
Unit 7
MS-LS3-2: Develop and use a model to describe why asexual reproduction results in offspring with
identical genetic information and sexual reproduction results in offspring with genetic variation.
Essential
Questions:
How do living organisms pass traits from one generation to the next?
(These goals should
be aligned to
Standards.)
Goals:
(These should be
aligned to the
Goals above)
Learning
Targets &
Skills
Students will be able to
describe why structural
changes to genes
(mutations) located on
chromosomes may
affect proteins and may
result in harmful,
beneficial, or neutral
effects to the structure
and function of the
organism
I can…
Students will be able to
describe why asexual
reproduction results in
offspring with identical
genetic information
and sexual
reproduction results in
offspring with genetic
variation
(aligned to goals)
Unit Language
4|Page
Unit Completed by:
Date:
Science
Academic Language Function(s):
Grade 7
Unit 7
Academic Language (What language will students need to sound like experts?)
Academic Language Stems:
Easy for Beginners
Content Vocabulary:


Medium for Intermediate
Difficult for Advanced and Fluent
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Unit Completed by:
Date:
Science
Grade 7
Unit 7
Unit Assessment Tools
Student Name
Learning Target
Unit of Study Assessment Checklist
B = Beginning
Notes
D = Developing
P = Proficient
M=Mastery
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Unit Completed by:
Date:
Science
Grade 7
Unit 7
Unit of Study Assessment Rubric
Unit # - Unit Title…
Learning Target
Strand 1
Mastery
Proficient
Developing
Beginning
Strand 1
Strand 2
Strand 3
Strand 4
Language Learning Target
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Date:
Science
Grade 7
Unit 7
Learning Activities
*Activities Section (see notes) linked to Methods section from Instructional Framework
Learning Target(s)
Possible Activities
Possible Evaluations
Engagement
Elaboration
Explanation
Exploration

8|Page
Unit Completed by:
Date:
Science
Grade 7
Unit 7
S.T.E.M Evaluation of Unit
STEM STANDARDS:
STANDARDS/TOPICS/SKILLS
SCIENCE
TECHNOLOGY
ENGINEERING
MATH
YES
NO
STEM ATTRIBUTES INCLUDED IN UNIT
Integrates Science, Technology, Engineering, and Math.
Develops communication and literacy skills.
Provides authentic, real-world experiences through contextual learning (may
include active citizenship).
Forms partnerships with business, industry, agencies, and nonprofits (may occur
outside the school).
Provides career awareness through postsecondary and career relevant
connections.
Fosters problem-solving, critical thinking, and argumentation skills through inquiry
and design.
Includes effective instructional strategies that develop collaboration and
teamwork.
Uses equitable instructional practices that are inclusive to all students regardless
of gender, disability, ethnicity, race, language, socioeconomic status, gender
identity and sexual orientation.
Uses standards-based performance/proficiency assessments.
Date of Unit Evaluation:
9|Page
Unit Completed by:
Date:
Science
Grade 7
Unit 7
BLANK UNIT CALENDAR to be Determined by Teacher or Teacher Teams
Monday
Tuesday
Wednesday
Thursday
Friday
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Grade 7
Unit 7
Materials Inventory for Teacher
Activity
Sink or Float
Materials in Kit
Materials Not Provided

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Grade 7
Unit/Bend Supply Inventory to submit at end of year:
Activity
Material
Unit 7
Original
Quantity
Actual
Quantity
Quantity
Needed
Sink or Float
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Grade 7
Unit 7
Appendix A
Teacher Background Knowledge
(teacher cheat sheet)
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