Variable Detectives Reading Guide 6th Grade Science • Visual Reading
Variable Detectives
Science Inquiry Guide
The 3 Big Words in Science
Read and look at the icons
Word 1
Independent Variable
"The Change"
What the scientist changes on purpose.
👉 Remember: Only change ONE thing!
Word 2
Dependent Variable
"The Data / Result"
What the scientist measures or counts.
👉 Remember: This is the number or answer.
Word 3
Controlled Variables
"The Constants"
What stays the same for all groups.
👉 Remember: Keep it equal and fair !
📖
Story: Maya's Plant Experiment
Read the science test below
Maya is a 6th grade scientist. She asks a question: "Which liquid makes tomato plants grow taller?"
Plant A Gets: Water 💧
Plant B Gets: Milk 🥛
Plant C Gets: Orange Juice 🍊
Independent Variable: Maya changes the type of liquid (water, milk, or juice).
Dependent Variable: Maya measures the plant height in centimeters (cm) with a ruler.
Controlled Variables: Maya keeps the same soil , the same pots , the same sunlight (6 hours), and the same amount of liquid (50 mL).
Science Rule: What is a Fair Test?
A test is fair when you change only ONE independent variable. If you change two things, you will not know why the plant grew!
💬
Scientist Talk Frames
"I change the [IV] ." "I measure the [DV] ." "I keep the [CV] same."
Variable Detectives Practice Worksheet Variable Detectives Practice
6th Grade Science • Name the Variables
Name:
Date:
Period:
Part 1: Match the Science Words Write the correct letter (A, B, or C) in the box
1. Independent Variable
Letter:
2. Dependent Variable
Letter:
3. Controlled Variables
Letter:
A What we keep the same so the test is fair.
B The ONE thing the scientist changes .
C What the scientist measures or counts for data.
Part 2: Airplane Experiment Detective Read and circle the best answer
Leo's Experiment: Leo builds 3 paper airplanes using 3 different types of paper . He flies each airplane from the same line in the gym. He uses a meter stick to measure how far each plane flies .
1. What is the independent variable (what Leo changed)?
A The type of paper
B The gym lights
C The meter stick
2. What is the dependent variable (what Leo measured)?
A The color of his shirt
B The distance the plane flew
C The number of students
Part 3: Complete the Sentence
Word Bank: changes • measures • same • fair
1. The independent variable is what the scientist .
2. The dependent variable is what the scientist .
3. Controlled variables must always stay the .
4. Only changing one thing makes it a test.
Part 4: Mini Detective Challenge Read and write your answers
Sofia's Question: "Does listening to music help students solve math puzzles faster?"
Independent Variable (What to change):
Dependent Variable (What to measure):
Controlled Variable (Keep the same):
Student Self-Check: I matched the words I found the variables I wrote in full sentences
Page 1 of 1
Variable Detectives Teacher Key Teacher Resource • Answer Key & EL Guide
Variable Detectives Key
Level: 6th Grade Science (WIDA 2.0)
Student Worksheet Complete Answers
Part 1: Matching
1. Independent: B (changes)
2. Dependent: C (measures)
3. Controlled: A (stays same)
Part 2: Airplane Test
Q1 (IV): A. Type of paper
Q2 (DV): B. Distance flew
Notes: Start line & thrower stayed same.
Part 3: Word Bank
1. changes
2. measures
3. same
4. fair
Part 4: Mini Detective Challenge (Acceptable Responses)
Independent Variable: Music vs. no music / Type of background sound.
Dependent Variable: Time to finish puzzle (minutes or seconds).
Controlled Variables: Same puzzle difficulty, same room, same grade level.
WIDA Level 2.0 (Emerging) Scaffolding Toolkit
Total Physical Response (TPR) Gestures
Independent: Pretend to turn a knob or flick a switch: "I change it!" Dependent: Pretend to hold a ruler or tap a stopwatch: "I measure it!" Controlled: Hold both hands flat and parallel: "Keep it equal and fair!"
Oral Practice Sentence Frames
"In this test, the scientist changed the ______." "The scientist will measure ______ to get data." "To make it fair, they must keep the ______ same."
Common ELL Misconceptions: Students often associate independent with "working alone in class" rather than "the factor the scientist chooses to change." Emphasize the mnemonic: "I"ndependent = "I" change it!
Pacing Guide:
0-10m: Vocab + TPR 10-25m: Choral Reading Guide 25-40m: Partner Worksheet 40-45m: Exit Stems
