Designing Investigation

What is an INDEPENDENT Variable?

• the ONE thing we change on purpose when designing an investigation

• the results of the change we made with our independent variable; what we MEASURE; can be quantitative and/or qualitative data

• these are the ways we change our independent variable

• these are the conditions that stay the same in order to have a “fair” investigation.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

What is the INDEPENDENT VARIABLE in this experiment? Place two plants of similar height in a window with lots of light. Water one plant with water every day and measure it’s height in inches. Water the other plant with gatorade and measure its height in inches. Compare the heights of each plant.

• What you're watering the plants with

• What you're measuring the plants with

• Where the plants have been placed

• The height of the plants every day

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

The variable we MEASURE.

• Dependent

• Independent

• Constant

Tags

NGSS.MS-PS2-2

What is an DEPENDENT Variable?

• the ONE thing we change on purpose when designing an investigation

• the results of the change we made with our independent variable; what we MEASURE; can be quantitative and/or qualitative data

• these are the ways we change our independent variable

• these are the conditions that stay the same in order to have a “fair” investigation.

What is the DEPENDENT VARIABLE in this experiment? Place two plants of similar height in a window with lots of light. Water one plant with water every day and measure it’s height in inches. Water the other plant with gatorade and measure its height in inches. Compare the heights of each plant.

• The water

• The gatorade

• The plants

• The height

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What are the CONTROL VARIABLES in this experiment? Place two plants of similar height in a window with lots of light. Water one plant with water every day and measure it’s height in inches. Water the other plant with gatorade and measure its height in inches. Compare the heights of each plant.

• Watering the plants every day

• Measuring with a ruler

• Where the plants are located

• Measuring in inches

Tags

NGSS.MS-LS2-1

Is the following statement an observation or an inference?

The girl's shirt is red.

• observation

• inference

Is the following statement an observation or an inference?

The table is 1.5 meters long.

• observation

• inference

Is the following statement an observation or an inference?

The dog is hungry.

• observation

• inference

What type of data is the following statement?

The mass of 10 pennies is 2.4 grams.

• qualitative data

• quantitative data