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.
Biology Corner
Biology Corner: Identifying Variables in an Experiment
Students analyze different experiments to determine independent variables, dependent variables and control groups.
Science Education Resource Center at Carleton College
Serc: Investigating Calculating the Effect of Mass, Length and Displacement
In this physics lab activity students investigate how mass, length and angular displacement affect the period of a simple pendulum. Students control variables, testing one variable at a time, using manual techniques (stopwatch, human...
CPALMS
Florida State University Cpalms: Florida Students: Identification of Variables
An explanation of how dependent and independent variables are used during experimentation.
TeachEngineering
Teach Engineering: Mint Mobiles
Students design, build and test model race cars made from simple materials (lifesaver-shaped candies, plastic drinking straws, Popsicle sticks, index cards, tape) as a way to explore independent, dependent and control variables. They...
American Chemical Society
Middle School Chemistry: Lesson Plans: Does Temperature Affect Dissolving?
Young scholars identify and control variables to design an experiment to see whether the temperature of a solvent affects the speed at which a solute dissolves.
Sophia Learning
Sophia: Independent/dependent Variables: Lesson 2
This lesson will explain the difference between independent and dependent variables. It is 2 of 4 in the series titled "Independent/Dependent Variables."
Sophia Learning
Sophia: Independent/dependent Variables: Lesson 3
This lesson will explain the difference between independent and dependent variables. It is 3 of 4 in the series titled "Independent/Dependent Variables."
Vision Learning
Visionlearning: Research Methods: Experimentation in Scientific Research
An explanation of scientific research using variables and controls.
McGraw Hill
Glencoe Publishing: Practicing Scientific Processes
This site from Glencoe Publishing not only explains hypothesis but also tells how to design an experiment to test your hypothesis. Includes the difficult task of "Separating and controlling variables."
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.
TeachEngineering
Teach Engineering: Are You in Control?
This lesson teaches the engineering method for testing wherein one variable is changed while the others are held constant. Learners compare the performance of a single paper airplane design while changing the shape, size and position of...
Science Education Resource Center at Carleton College
Serc: Investigating Motion: Calculating and Graphing Students Walking Speed
In this activity young scholars will collect and analyze data of their walking speed. They will compare their speed to an outside speed walker. They will determine their speed every 20 meters up to 100 meters. They will complete five...
Science Education Resource Center at Carleton College
Serc: Physiology Monitoring and Cycles Lab With Report
Using physiology monitoring, students will understand how to collect data using scientific methods in this activity. Students will also learn how to communicate the finding in a lab report. Physiology monitoring will include measuring...
Sophia Learning
Sophia: Independent/dependent Variables: Lesson 1
This lesson will explain the difference between independent and dependent variables. It is 1 of 4 in the series titled "Independent/Dependent Variables."
American Chemical Society
Middle School Chemistry: Lesson Plans: Can Liquids Dissolve in Water?
Lesson plan with mulitmedia links in which learners identify and control variables to help design a solubility test for different liquids in water.
Texas Education Agency
Texas Gateway: Experimental Design
Given investigation scenarios and lab procedures, students will identify independent variables, dependent variables, constants, and control groups.
Khan Academy
Khan Academy: Storing Strings in Variables
When we're making a program, we often want to store sequences of letters. In programming lingo, we call each letter a character and we call the sequence a string.
Better Lesson
Better Lesson: Force and Motion Investigation
Conduct an investigation collaboratively on the effect of force applied on an object to produce data to serve as the basis for evidence, by using fair tests in which variables are controlled and the number of trials are considered.
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...
Khan Academy
Khan Academy: Polygenic Inheritance and Environmental Effects
Learn about traits that are controlled by multiple genes and/or influenced by the environment. Understand penetrance and expressivity.
Sophia Learning
Sophia: Control and Variable Groups: Lesson 3
This lesson will explain the difference between a control group and variable groups, when using the scientific method. It is 3 of 4 in the series titled "Control and Variable Groups."
Sophia Learning
Sophia: Control and Variable Groups: Lesson 4
This lesson will explain the difference between a control group and variable groups, when using the scientific method. It is 4 of 4 in the series titled "Control and Variable Groups."
Sophia Learning
Sophia: Control and Variable Groups: Lesson 1
This lesson will explain the difference between a control group and variable groups, when using the scientific method. It is 1 of 4 in the series titled "Control and Variable Groups."
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