Classification
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Classification involves organizing items into groups based on shared properties or characteristics. There are several types of classification including serial, binary, and multi-stage. Serial classification involves ordering items from a particular trait like height. Binary classification divides items into two groups based on whether they have a specific property or not. Multi-stage classification organizes items into multiple non-overlapping groups. Scientists use classification to systematically organize the natural world into meaningful categories.
Classification
- 1. Classification: An Inquiry Skill
- 2. Classify What does it mean to classify items?
- 3. Classify To classify means to organize items into groups Can you think of anything that is classified into groups?
- 4. We can classify… Animals Plants Rocks And much, much more!
- 5. Different kinds of classification • We can classify items in different ways • A very simple way to classify is to put things in order
- 6. Serial classification • For example, you could classify the students in your class by arranging them in order from tallest to shortest • In science class, you could arrange a set of graduate cylinders in order from the greatest volume to the least volume • What else could you classify using serial classification?
- 7. Binary classification • Another way to classify is to divide items into two groups, based on a property • When items are classified this way, one group has the property, and the other group does not
- 8. Binary classification What are some things that you could classify this way? Living/Nonliving Magnetic/Nonmagnetic Metal/Nonmetal
- 9. How are these classified? Vertebrates Invertebrates
- 10. Multi-stage classification • In this kind of classification, we organize items into multiple groups • Usually, the groups do not overlap—items fit into one and only group
- 12. Multi-stage classification There are more categories, of course!
- 13. You can classify! • What are some things that you classify each day? • What kind of classification do you use? – Serial (putting things in order) – Binary (two groups) – Multi-stage (several groups)
- 14. Why do scientists classify? Why do scientists use the skill of classification?
Editor's Notes
- #15: Emily Kissner 2011