Science Buddies
Science Buddies: Scientific Method Variables/hypothesis
Find out what variables are in a scientific investigation and what the difference is between an independent, dependent, and controlled variable. Look at samples of different types of variables and find out what makes a good variable.
American Chemical Society
Inquiry in Action: Crushing Test
This lab activity will have students crushing crystals to learn about variables and the importance of controlling those variables. Lab activity includes student and teacher instructions.
Annenberg Foundation
Annenberg Learner: The Control a Haber Bosch Ammonia Plant
An activity where students try to optimize profits by producing the largest daily output of ammonia by simulating the Haber-Bosch process. Students will use their knowledge of equilibrium reactions and the effects of variables like...
University of Nebraska Omaha
Ec Ed Web: How Can Entrepreneurs Control Costs?
This economics instructional activity explores what influences producers to supply in regard to demand. It examines fixed and variable costs, how such costs can be reduced, and how they influence production. Includes printable worksheets.
TeachEngineering
Teach Engineering: Will It Fly?
In this lesson, students will learn about kites and gliders and how these models can help in understanding the concept of flight. Students will design and build their own balsa wood models and experiment with different control surfaces....
Texas Education Agency
Texas Gateway: Experimental Design
Given investigation scenarios and lab procedures, students will identify independent variables, dependent variables, constants, and control groups.
TeachEngineering
Teach Engineering: Better by Design
The purpose of this activity is to use a scientific method to determine the effect of control surfaces on a paper glider. The students will construct a paper airplane/glider and test its performance to determine the base characteristics...
PBS
Pbs Teachers: Scientific American: About All You Can Eat: Feast or Famine
Investigate the theory that including desert plants such as mesquite and cactus in a diet can help control obesity and diabetes. Design a scientific experiment that will test this hypothesis, using control variables, observation and...
TeachEngineering
Teach Engineering: Wet Pennies
Students conduct a simple test to determine how many drops of each of three liquids can be placed on a penny before spilling over. The three liquids are water, rubbing alcohol, and vegetable oil; because of their different surface...
PBS
Pbs Nova Teachers: The Most Dangerous Woman in America: Classroom Activity
Test the efficacy of different types of hand hygiene to stem the transmission of diseases by conducting an experiment using variables and a control group.