Lesson: Graphing Independent and Dependent Variables 3/21
Lesson Objective
Lesson Plan
Science Lesson 2.10: Graphing Independent and Dependent Variables
Teacher: Andrea Ricaurte *Adapted from Ms. McGonegle 
Date: March 21, 2011 
Subject: Science 
Class: All 

AIMS: Explain how to graph independent and dependent variables.


AGENDA:
Do Now, HW Review, AIMS, Guided Practice, Group Practice, Share

HOMEWORK Week 4 HW # 1
MATERIALS: Overhead 

DO NOW [5 min.]: Terrance is doing an experiment on bean plants. He sets four different cups, each with four seeds, on the windowsill in his house. He gives each bean plant the same amount of soil. He measures their height every Thursday. Using the picture as your guide, answer the following questions:
a) What is Terrance’s independent variable?
b) What is his dependent variable?
________________________________________________________________
What are THREE things he might have controlled? ___________________________ 

HW Review [7 min.] Call on ten students at random to give the answers for the independent and dependent variables they identified on their hw.


AIMs Scholars will be able to…graph independent … and dependent variables!


Minilesson [5 min.]
As the independent variable increases, the dependent variable will either increase or decrease. You always write the independent variable on the xaxis and the dependent variable on the yaxis. Do not forget the units. Draw the two different graphs that could result.
Guided Practice [7 min.]
Remember: Independent Variable is what the scientist changes and the Dependent Variable is what the scientist measures to see if there’s been an effect.
Smithers thinks that a special juice will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers). Group A is given the special juice to drink while they work. Group B is not given the special juice. After an hour, Smithers counts how many stacks of papers each group has made.
Independent Variable: Special juice Dependent Variable: Productivity (# papers stapled)


Partner Practice [15 min.] Homer Independent Variable: Coconut juice Dependent variable: amount of slime
Bart Independent Variable: Microwaved Dependent variable: Strength
Krusty Independent Variable: Brand of itching powder Dependent variable: Minutes scratching

Lesson Resources
Graphing variables 
455

LP graphing variables 
255

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