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Why Circulate?


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Why Circulate?

In this activity related to the human circulatory system (on page 10 of the PDF), learners observe the dispersion of a drop of food coloring in water, draw conclusions about the movement of dissolved substances, and develop explanations about the importance of organisms' internal transport systems. This activity allows learners to investigate the process of diffusion and to consider why many organisms have internal transport systems. This lesson guide includes background information, setup and management tips, and a handout.

Quick Guide


Preparation Time:
5 to 10 minutes

Learning Time:
45 to 60 minutes

Estimated Materials Cost:
1 cent - $1 per group of students

Age Range:
Ages 8 - 14

Resource Types:
Activity, Experiment/Lab Activity, Lesson/Lesson Plan

Language:
English

Materials List (per group of students)


  • 2 sheets of graph paper (0.5-cm grid)
  • Graduated cylinder (100-mL or 250-mL)
  • Lid or bottom of a Petri dish
  • Pencil
  • Small dropper bottle of food coloring (red, blue or green; do not use yellow)
  • Tape
  • Timer, watch or clock
  • Digital camera for recording observations (optional)
  • Copies of student sheet (p.12)

Subjects


  • Life Sciences
    • Cells
      • Cell Structure and Function
      • Cell Metabolism
      • Chemistry of Life
    • Human Body
      • Circulation
  • Mathematics
    • Data Analysis and Probability
      • Data Analysis
      • Data Collection
      • Data Representation
    • Measurement
      • Rate
    • Number and Operations
  • Physical Sciences
    • Chemistry
      • Chemistry of Life
      • Solutions
  • The Nature of Science
    • The Scientific Process
      • Conducting Investigations
      • Gathering Data
      • Formulating Explanations
      • Communicating Results

Audience


To use this activity, learners need to:

  • see
  • see color
  • read
  • touch

Learning styles supported:

  • Involves teamwork and communication skills
  • Involves hands-on or lab activities

Other


Includes alignment to state and/or national standards

Includes assesments for student learning

This resource is part of:

Access Rights:

  • Free access

By:

  • Tharp, Barbara Z.; Erdmann, Deanne B.; Matyas, Marsha L.; McNeel, Ronald L.; Moreno, Nancy P.

Rights:

  • All Rights Reserved, Baylor College of Medicine, ©2009

Funding Source:

  • NASA, NCC 9-58

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  • Thumbnail Biology by rwitbeck14@gmail.com on 2016-08-21