Transcript Teaching the Concept of the Circulatory System: Animals vs. Plants

Teaching the Concept of the
Circulatory System: Animals vs.
Plants
By: Janet Vaz and Debra Fabian
Introduction
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We all know that
animals, humans
included, have a
circulatory system made
up of blood, blood
vessels and a heart.
But what if we told you
that plants also have a
similar circulatory
system? How is this
possible?
Lesson Sequence
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Lesson 1: Cell Specialization - An Overview
●Cells differentiate to become tissues and organs
Lesson 2: Circulatory System of Animals
●Heart, Blood, Blood vessels
Lesson 3: Circulatory System of Plants
●Vascular tissue system, Xylem, Phloem
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Lesson 4: Plant Circulatory System Lab
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Lesson 5: Circulatory System of Animals vs. Plants
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Lesson 6-8: Culminating Task – Research Assignment
Curriculum Expectations
Grade 10 - Biology: Tissues, Organs and Systems of Living
Things
B3.3 Explain the links between specialized cells, tissues,
organs, and systems in plants and animals
B3.4 Explain the primary functions of a variety of systems in
animals
B3.5 Explain the interaction of different systems within an
organism and why such interactions are necessary for
the organism's survival
B2.7 Use a research process to investigate a disease or
abnormality related to tissues, organs, or systems of
humans or plants
Teaching Strategies: Overview
Video on Cell Specialization found at:
http://www.brainpop.com/health/geneticsgrowthanddevelopment/cellspecialization/preview.weml
Teaching Strategy: Circulation in
Animals Activity
http://www.explorelearning.com/index.cfm?method=cResource.dspDetail&ResourceID=662&ClassID=0
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Gizmos interactive activity used to
develop an understanding of the parts,
and pathways of the circulatory system
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Students must complete this visual lab
by using the student worksheet provided
to work through each section
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Extensions are provided for students
who are able to move beyond the
expectations, and for those who require
more support, they will be provided with
a vocabulary sheet
Teaching Strategy: Circulatory
System of Plants Demonstration
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Place a white carnation in water
Ask: "What do you think is
happening when the flower is in
the water?". Discuss ideas as a
class.
Ask: "What do you think will
happen if I add blue dye to the
water?".
Allow students to come up with a
hypothesis.
Place the flower in the water
and discuss results.
Teaching Strategy: Circulatory
System of Plants Activity
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In pairs, students complete a
mind map (or other graphic
organizer) of the plant transport
system using textbook &
additional online resources
Vocabulary list is provided to
ensure students include all
necessary components
Teaching Strategy: Circulatory
System of Plants - Lab
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For the lab component, students
observe a cross section of a
vascular plant cell under the
microscope, create a labelled
diagram, and communicate their
findings
Communication section focuses
on comparing similarities and
differences between plant and
animal circulatory systems
including form and function
Teaching Strategy: Comparison
Game
Create a Jeopardy game full of comparison questions
between the circulatory system of plants and animals:
http://exchange.smarttech.com/details.html?id=1903b709-c359-4676-a6e244aee90b032c
Teaching Strategy: Research-based
Assignment
Students choose from a list of potential diseases/conditions
affecting the circulatory system of either plant or animal
cells
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Information can be communicated in a variety of ways such
as PowerPoint presentation, Wiki, research paper, etc.
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Groups must create a handout for the class that includes
disease description, symptoms, treatments, preventative
measures, consequences to other systems connected to the
circulatory/transport system
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Potential Student Difficulties
CONTENT DIFFICULTIES
Many terms – students must learn parts of heart and plant
cell
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Transport direction – which way does blood flow within the
heart? Which vessels carry oxygen and in what direction?
Differences between Xylem and Phloem contents and
direction
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Potential Student Difficulties
PROCESS DIFFICULTIES
Mind map is time consuming and requires a strong
understanding of how things fit together
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Students must have a good cross section and must focus the
microscope accurately in order to see the necessary
components
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Communication section of microscope
lab is individually written and
application-based
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Potential Solutions to Student
Difficulties
Encourage students to develop acronyms/phrases to help
remember details ie. Blood through heart chambers
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Include a vocabulary/terms list and examples of mind maps
to refer to as students work through the graphic organizer
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Provide images of plant cross sections as students work
through microscope section
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Refer students to additional resources that provide
information on similarities and differences between plant
and animal circulatory systems for the communication
section of lab
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Safety Considerations
Computer components for the
Gizmo activity and research
sections of various assignments
must be conducted in a
responsible manner, including
using the internet for educational
purposes
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Microscope and related lab equipment must be used in
accordance with the code of conduct agreed upon at the start of
the year
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Classroom must be safely organized so nothing is in the way while
groups are working at microscope stations
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Practical Applications
Use of Nanotechnology in Vascular Cell Research
- Looking into new ways of tracking bacterial/viral movement in
plant cells
Medical Advancements in Circulatory System Technology
• Assessing how heart condition treatment has changed over the
last few decades, and how it could change in the years to come
Differentiated Assessment
SUMMATIVE ASSESSMENT
1) Both practical applications are related to the research-based
assignment which has rubrics provided to explain how it will be
assessed in the following ways:
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PowerPoint, poster, or other visual method displaying
information on chosen condition
Student-designed handout and oral presentation
2) Unit test will check student understanding of the concepts of:
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parts of plant/animal circulatory system
pathways of nutrient transfer
similarities and differences among plants and animals
Differentiated Assessment
FORMATIVE ASSESSMENT
1) Interactive Gizmo activity as process learning of animal
circulatory system
2) Mind map as a visual learning tool to connect vascular
components in plants
3) Ongoing class discussions based on demonstrations, labs, and
online activities