Biology Experimental Design and Variables

What are the steps involved in the experimental design process?

• Identify the problem or question, Conduct the experiment, Collect and analyze data, Draw conclusions, Share the findings, Formulate a hypothesis

• Identify the problem or question, Formulate a hypothesis, Design the experiment, Collect and analyze data, Draw conclusions, Communicate the results

• Formulate a hypothesis, Conduct the experiment, Analyze the data, Draw conclusions, Communicate the results, Repeat the experiment

• Identify the problem or question, Formulate a hypothesis, Conduct the experiment, Analyze the data, Ignore the results, Share the findings

Tags

NGSS.MS-ETS1-3

NGSS.MS-ETS1-4

NGSS.MS-PS2-2

What are some common experimental design pitfalls to avoid?

• Using a large sample size

• Including too many confounding variables

• Randomly assigning participants to groups

• Some common experimental design pitfalls to avoid include: lack of control group, small sample size, biased sampling, confounding variables, lack of randomization, and failure to replicate the experiment.

The independent variable is the ONE thing you _____

• change

• keep the same

• experiment with

• investigate

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

In a controlled experiment, the variable that is changed to test the hypothesis is called the –

• Controlled Variable

• Responsive Variable

• Dependent Variable

• Independent Variable

The measurable factor in an experiment is known as the: 

• Control

• Independent Variable

• Constant

• Dependent Variable

Tags

NGSS.MS-PS2-2

In a controlled experiment, how many variables can be worked with at a time? 

• one

• none

• two or more

• how ever many makes sense.

Tags

NGSS.MS-PS2-2

The part of the experiment that remains the same for the control and experimental group.

• constants

• control

• independent

• dependent

When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer?

• Dependent

• Independent

• Control

• Compound

Tags

NGSS.MS-ETS1-1

The part of the experiment that does not contain the independent variable. Used for comparison.

• Control Group

• Experimental Group

• Results

• Data

What are all the things that are kept the same in an experiment?

• controls

• data

• constants

• independent variables

Tags

NGSS.MS-PS1-5