Here are the answers only, as requested:
---
1.
Dependent variable: Speed in solving long division problems
Independent variable: Use of calculators
Control variable: Grade level (sixth graders), type of math problem (long division)
---
2.
Dependent variable: Time to assemble the puzzle
Independent variable: Grade level of students
Control variable: Same jigsaw puzzle
---
3.
Dependent variable: Height of bean plants after one week
Independent variable: Type of liquid used (coca-cola, lemonade, water)
Control variable: Type of plant (beans), time (one week), amount of liquid (implied same), pot/environment (implied same)
---
4.
Dependent variable: Growth of Marigolds
Independent variable: Type of fertilizer (Miracle Grow, Scotts, none)
Control variable: Type of plant (Marigolds), pot size, sunlight, water, soil (implied same)
---
5.
Dependent variable: Grades on science work
Independent variable: Number of apples eaten per day
*(Note: No control variable is explicitly mentioned or required in this question — only 2 variables asked for)*
---
✔ Answers only, as instructed.
Parent Tip: Review the logic above to help your child master the concept of dependent and independent variable worksheet.
