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.
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: 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."
Cosmo Learning
Cosmo Learning: Control Engineering
A collection of video lectures from an industrial control course taught at the National Programme on Technology Enhanced Learning. The course teaches basic characteristics of feedback control systems, frequency-response analysis, and...
TeachEngineering
Teach Engineering: Obi Wan Adobe: Engineering for Strength
Students conduct an experiment to determine how varying the composition of a construction material affects its strength. They make several adobe bricks with differing percentages of sand, soil, fibrous material and water. They test the...
Science Education Resource Center at Carleton College
Serc: Catapults: Controlled Investigations
In this structured inquiry, students will investigate a catapult system. Having previously explored and identified the variables of the catapult system (length of lever, mass of shot, angle of catapult), students will conduct controlled...
TeachEngineering
Teach Engineering: Students as Scientists
This curricular unit contains two lessons that let students actually do the work of scientists as they design their own experiments to answer questions they generate. In the first lesson and its associated activity, students conduct a...
Cengage Learning
Cengage Learning: Project Based Learning: Egg Drop Experiment
Students are challenged to design a way to drop a raw egg from varying heights without letting the egg break. Creative thinking and evaluation of results are critical to the project.
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: Balsa Glider Competition
The purpose of this activity is to bring together the students' knowledge of engineering and airplanes and the creation of a glider model to determine how each modification affects the flight. The students will use a design procedure...
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...
NOAA
Noaa: Stressed Out! [Pdf]
In this lesson, learners investigate factors that affect the health of the oceans. These include overfishing, the destruction of habitats, the invasion of foreign species, the impact of pollution, and the increasing acidification. An...
Vision Learning
Visionlearning: Research Methods: Experimentation in Scientific Research
An explanation of scientific research using variables and controls.
CK-12 Foundation
Ck 12: Scientific Method
[Free Registration/Login may be required to access all resource tools.] Describe how the Renaissance period in history changed the approach to science. Identify the steps of the scientific method. Differentiate between the independent...
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?
Students identify and control variables to design an experiment to see whether the temperature of a solvent affects the speed at which a solute dissolves.
TeachEngineering
Teach Engineering: Gears: Determining Angular Velocity
Students work as engineers and learn to conduct controlled experiments by changing one experimental variable at a time to study its effect on the experiment outcome. Specifically, they conduct experiments to determine the angular...
TeachEngineering
Teach Engineering: Trebuchet Launch
Students work as engineers to design and test trebuchets (in this case LEGO MINDSTORMS robots) that can launch objects. During the testing stage, they change one variable at a time to study its effect on the outcome of their designs....
TeachEngineering
Teach Engineering: Wide World of Gears
In an interactive and game-like manner, students learn about the mechanical advantage that is offered by gears. By virtue of the activity's mechatronics presentation, students learn to study a mechanical system as a dynamic system under...
TeachEngineering
Teach Engineering: Viscosity: The Flow of Milk
Students study the physical properties of different fluids and investigate the relationship between the viscosities of liquid and how fast they flow through a confined area. Student groups conduct a brief experiment in which they...
CK-12 Foundation
Ck 12: Chemistry: Scientific Experiments
[Free Registration/Login may be required to access all resource tools.] Experiments, experimental variables, and experimental controls are discussed.
PBS
Pbs Teachers: Daredevil Ball Jump Ii Experiment
Make alterations in the variables of the original ZOOM Daredevil Ball Jump activity by heating or cooling the balls in the experiment. Predict how the balls' bounces will be affected by hot and cold, test the predictions and record the...
Other
Stat Soft: Statistics Glossary
Dozens of statistical terms are defined and illustrated in this glossary.