Nicholas planted five carrot seeds in each of three different milk

cartons of equal size. He filled each carton to the same level with the

same kind of soil. He put on carton outside in the sun, one on the

counter in the classroom light, and one inside a dark closet. He gave

each carton 25 ml of water each day at 11 am. He watered all three

cartons every day for fifteen days and then measured how tall each

plant grew.

Stacey choose 2 fat free chips, baked chips, and regular potato

chips all about the same size. She then crushed them each on a

brown paper bag and waited 30 minutes. Then she used a ruler to

measure the widest part of the grease stain for each chip and

compared the results to see which was the greasiest.

Highlighting Variables

Name _____________________________________________

Lawrence choose three identical paper cups and poke a similar

hole in the bottom of each cup. He filled each cup to the same

level with different material - soil, sand, or pebbles. Then he

poured 1 cup of water into each cup at a time and held it over

the tray for one minute. He then measured the amount of water

that drained into the tray from each cup.

Directions: Read each paragraph below. Highlight the independent variable in pink, the dependent variable in yellow, and the controlled variables in green.

© The Owl Teacher

Jose choose four identical paper towels and pour one

tablespoon of water onto the center of each paper towel. He

hung strings across four different places and clipped each

paper towel to the string by one corner so it hung in the air. He

hung one paper towel outside in a sunny spot, one outside in a

shady spot, one inside the light, and one inside the dark. After

30 minutes, he took all four paper towels down and felt them

to compare how dry each one had become.

Jessica wanted to know if a car travels farther when it’s

lighter or heavier. She wrapped two identical rubber bands

around two identical boards to help pull the cars back and

spring them forward. She measured back 5 inches and

marked a line so that she could always pull the cars with

the rubber bands back to that point before letting them go.

She then pulled one car back to the line, one at a time, and

let go of them. She then measured how far each car rolled.

Malik stood on pavement and extended his arm out from his

shoulder. He then dropped a tennis ball and measured with a

meter stick how high it bounced up. He repeated this two more

times. Next, Malik stood on dirt and extended his arm out from

his shoulder. He dropped the same tennis ball and measured

using the same meter stick how high the tennis ball bounced

up. He repeated this two more times with the dirt. Finally, Malik

stood on grass and repeating the exact same procedures,

determined how high the ball bounced.

© The Owl Teacher

Nicholas planted five carrot seeds in each of three different milk

cartons of equal size. He filled each carton to the same level with the

same kind of soil. He put on carton outside in the sun, one on the

counter in the classroom light, and one inside a dark closet. He gave

each carton 25 ml of water each day at 11 am. He watered all three

cartons every day for fifteen days and then measured how tall each

plant grew.

Stacey choose 2 fat free chips, baked chips, and regular potato

chips all about the same size. She then crushed them each on a

brown paper bag and waited 30 minutes. Then she used a ruler to

measure the widest part of the grease stain for each chip and

compared the results to see which was the greasiest.

Highlighting Variables

Name _____________________________________________

Lawrence choose three identical paper cups and poke a similar

hole in the bottom of each cup. He filled each cup to the same

level with different material - soil, sand, or pebbles. Then he

poured 1 cup of water into each cup at a time and held it over

the tray for one minute. He then measured the amount of water

that drained into the tray from each cup.

Directions: Read each paragraph below. Highlight the independent variable in pink, the dependent variable in yellow, and the controlled variables in green.

KEY

© The Owl Teacher

Jose choose four identical paper towels and pour one

tablespoon of water onto the center of each paper towel. He

hung strings across four different places and clipped each

paper towel to the string by one corner so it hung in the air. He

hung one paper towel outside in a sunny spot, one outside in a

shady spot, one inside the light, and one inside the dark. After

30 minutes, he took all four paper towels down and felt them

to compare how dry each one had become.

Jessica wanted to know if a car travels farther when it’s

lighter or heavier. She wrapped two identical rubber bands

around two identical boards to help pull the cars back and

spring them forward. She measured back 5 inches and

marked a line so that she could always pull the cars with

the rubber bands back to that point before letting them go.

She then pulled one car back to the line, one at a time, and

let go of them. She then measured how far each car rolled.

Malik stood on pavement and extended his arm out from his

shoulder. He then dropped a tennis ball and measured with a

meter stick how high it bounced up. He repeated this two more

times. Next, Malik stood on dirt and extended his arm out from

his shoulder. He dropped the same tennis ball and measured

using the same meter stick how high the tennis ball bounced

up. He repeated this two more times with the dirt. Finally, Malik

stood on grass and repeating the exact same procedures,

determined how high the ball bounced.

© The Owl Teacher

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