# Lesson: Using the IVCDV chart to help understand variables and constants

David Kujawski Bird Middle East Walpole, MA
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### Lesson Objective

YWBAT: 1) Organize a scientific experiment 2) Accurately identify and explain the independent and dependent variables and constants in different experiments

### Lesson Plan

Note: Resources derived and modified from John Funk's BL lessons.

DO NOW: I have students practice converting metric units b/c they have a test in about a week.  You can have them answer whatever question that you'd like.

Part one of lesson:  Pose a question to the class ("Does different amounts of the same fertilizer affect the height of plants).  Then have them create an acceptable hypothesis (If....then) that addresses the question.  I then ask students to create a plan on how they would organize their experiment to test their hypothesis.  I don't give them any information on variables and constants at this point; I just want them to think on their own and then improve their research design after I directly instruct them (IVCDV powerpoint presentation created by John Funk).

Part 2: Present the IVCDV presentation and address student questions

Part 3: I then ask students to go back to their partner groups and critique their original experiment design and then, with another colored pen, I ask them to add or omit aspects of the lesson, based on the presentation and their new found understanding of variables and constants.

Part 4: Give students the IVCDV worksheets and, as a class, read the first scenario and fill it in together.  Next, have students work with a partner to fill in the remaining IVCDV charts for the other scenarios.

Depending on the classes overall ability, they will either finish and review the scenarios in class or they will have to finish the worksheet for HW.

### Lesson Resources

 variable and constant scenarios.doc 657 IVCDV Chart[1].ppt 869
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