Independent Variable:
The exact words are:
Dependent Variable:
The exact words are:
2 Control Variables:
The exact words are:
Scenario 4: Cleaning Sponges Mirrors Slide 6
Jamal tests which sponge brand absorbs the most liquid. He tests Brand A, Brand B, and Brand C. Each sponge starts with a dry weight of 20 grams, is placed in a bowl with 500 mL of water, and soaks for 10 seconds. Jamal measures the milliliters of water absorbed.
Independent Variable:
The exact words are:
Dependent Variable:
The exact words are:
2 Control Variables:
The exact words are:
Variable Detectives Lab Guide • Scenarios 3 & 4 Page 2 of 3
Independent Trials
Notice the trials in Scenario 6!
Scenario 5: Music and Memory Mirrors Slide 7
Sofia tests if music type changes how many words students can remember. Group 1 listens to classical music and Group 2 listens to rock music. Both groups study the same 20 words for the same 5 minutes in the same quiet room. Sofia counts the number of words remembered on a test.
Independent Variable:
The exact words are:
Dependent Variable:
The exact words are:
2 Control Variables:
The exact words are:
Scenario 6: The Ramp Experiment with Trials Mirrors Slides 8 & 9
David tests how ramp height changes how far a car rolls. In Trial 1, he uses a 10 cm ramp. In Trial 2, he uses a 20 cm ramp. In Trial 3, he uses a 30 cm ramp. In each trial, he uses the same toy car and the same tile floor. He measures the distance rolled in centimeters.
Independent Variable:
The exact words are:
Dependent Variable:
The exact words are:
2 Control Variables:
The exact words are:
Experiment Trial Check:
1. A trial is defined as:
2. How many trials did David run in this experiment? The exact number of trials is:
Variable Detectives Lab Guide • Scenarios 5 & 6 Page 3 of 3
Mirrors Slides 7, 8 & 9
Scenario 5: Music and Memory (Key) Mirrors Slide 7
Sofia tests if music type changes how many words students can remember...
Independent Variable:
"music type"
(classical vs rock)
Dependent Variable:
"number of words remembered"
2 Control Variables:
"same 20 words", "same 5 minutes", "same quiet room"
Scenario 6: The Ramp Experiment with Trials (Key) Mirrors Slides 8 & 9
David tests how ramp height changes how far a car rolls in 3 trials...
Independent Variable:
"ramp height"
(10 cm, 20 cm, 30 cm)
Dependent Variable:
"distance rolled in centimeters"
2 Control Variables:
"same toy car", "same tile floor"
Experiment Trial Check (Key):
1. A trial is defined as:
"One test or run of an experiment."
2. How many trials did David run in this experiment? The exact number of trials is:
"3 trials" (Trial 1: 10 cm, Trial 2: 20 cm, Trial 3: 30 cm)
Variable Detectives Answer Key • Teacher Master Key Page 3 of 3
(The data measured)
Control Variables
"same copy paper"
"same throwing force"
Give yourself a checkmark if you wrote these exact words!
Scenario 4
Page 2 Handout
"Jamal tests which sponge brand absorbs the most liquid (Brand A, B, and C). Each sponge has a dry weight of 20 grams, soaks in 500 mL of water for 10 seconds. Jamal measures the milliliters of water absorbed."
Independent Variable
"sponge brand"
(Brand A, B, C)
Dependent Variable
"milliliters of water absorbed"
Control Variables
"dry weight of 20 grams"
"10 seconds"
Turn to Page 3 of your handout for Scenarios 5 & 6!
Scenario 5
Page 3 Handout
"Sofia tests if music type changes how many words students remember. Group 1 hears classical and Group 2 hears rock. Both study the same 20 words for the same 5 minutes in the same quiet room. Sofia counts the number of words remembered."
Independent Variable
"music type"
(Classical vs Rock)
Dependent Variable
"number of words remembered"
Control Variables
"same 20 words"
"same 5 minutes"
Great job! Now let's look at Scenario 6 with Trials!
Scenario 6
Page 3 Handout
"David tests how ramp height changes how far a car rolls. In Trial 1, he uses 10 cm. In Trial 2, 20 cm. In Trial 3, 30 cm. He uses the same toy car and same tile floor. He measures distance rolled in centimeters."
Independent Variable
"ramp height"
(10 cm, 20 cm, 30 cm)
Dependent Variable
"distance rolled in centimeters"
Control Variables
"same toy car"
"same tile floor"
Almost done! Check the trial definition box on Slide 9!
Final Check
Bottom of Page 3
1. What is the definition of a trial?
"One test or run of an experiment."
2. How many trials did David run in this experiment?
"3 trials" (Trial 1, Trial 2, and Trial 3)
Mastery achieved! You can identify variables across all 6 scenarios!
Variable Independiente:
Las palabras exactas son:
Variable Dependiente:
Las palabras exactas son:
2 Variables Controladas:
Las palabras exactas son:
Escenario 4: Esponjas de limpieza Sigue la Diapositiva 6
Jamal prueba qué marca de esponja absorbe más líquido. Prueba la Marca A, Marca B y Marca C. Cada esponja comienza con un peso seco de 20 gramos, se coloca en un tazón con 500 mL de agua y se remoja durante 10 segundos. Jamal mide los mililitros de agua absorbida.
Variable Independiente:
Las palabras exactas son:
Variable Dependiente:
Las palabras exactas son:
2 Variables Controladas:
Las palabras exactas son:
Detectives de Variables • Folleto en Español • Escenarios 3 y 4 Página 2 de 3
Ensayos Independientes
¡Observa los ensayos en el Escenario 6!
Escenario 5: Música y memoria Sigue la Diapositiva 7
Sofía prueba si el tipo de música cambia cuántas palabras pueden recordar los estudiantes. El Grupo 1 escucha música clásica y el Grupo 2 escucha música rock. Ambos grupos estudian las mismas 20 palabras durante los mismos 5 minutos en el mismo salón tranquilo. Sofía cuenta el número de palabras recordadas en una prueba.
Variable Independiente:
Las palabras exactas son:
Variable Dependiente:
Las palabras exactas son:
2 Variables Controladas:
Las palabras exactas son:
Escenario 6: El experimento de la rampa con ensayos Sigue las Diapositivas 8 y 9
David prueba cómo la altura de la rampa cambia qué tan lejos rueda un carrito. En el Ensayo 1, usa una rampa de 10 cm. En el Ensayo 2, usa una rampa de 20 cm. En el Ensayo 3, usa una rampa de 30 cm. En cada ensayo, usa el mismo carrito de juguete y el mismo piso de baldosas. Mide la distancia recorrida en centímetros.
Variable Independiente:
Las palabras exactas son:
Variable Dependiente:
Las palabras exactas son:
2 Variables Controladas:
Las palabras exactas son:
Comprobación del Ensayo:
1. Un ensayo se define como:
2. ¿Cuántos ensayos realizó David en este experimento? El número exacto de ensayos es:
Detectives de Variables • Folleto en Español • Escenarios 5 y 6 Página 3 de 3
