Final Answer:
1. Dependent: speed in solving long division problems
Independent: use of calculators
Control: grade level (sixth graders), type of problem (long division)
2. Dependent: time to assemble the puzzle
Independent: student grade level
Control: same jigsaw puzzle
3. Dependent: height of beans
Independent: type of liquid (coca-cola, lemonade, water)
Control: type of plant (beans), time (one week), pot size, light, etc.
4. Dependent: growth of Marigolds
Independent: type of fertilizer (Miracle Grow, Scotts, none)
Control: type of plant (Marigolds), pot size, water, light, etc.
5. Dependent: grades on science work
Independent: number of apples eaten
(No control variable explicitly stated — but implied: same classwork, same student, same days)
Parent Tip: Review the logic above to help your child master the concept of independent versus dependent variable worksheet.
