Why Circulate?
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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.
- 5 to 10 minutes
- 45 to 60 minutes
- 1 cent - $1 per group of students
- Ages 8 - 14
- Activity, Experiment/Lab Activity, Lesson/Lesson Plan
- English
Quick Guide
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
- Cells
- Mathematics
- Data Analysis and Probability
- Data Analysis
- Data Collection
- Data Representation
- Measurement
- Rate
- Number and Operations
- Data Analysis and Probability
- Physical Sciences
- Chemistry
- Chemistry of Life
- Solutions
- Chemistry
- The Nature of Science
- The Scientific Process
- Conducting Investigations
- Gathering Data
- Formulating Explanations
- Communicating Results
- The Scientific Process
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
