This page provides the directions and questions as they were presented to students who took the Electrical Circuits task. In addition, following each question is a sample response, the scoring criteria used to judge performance on the question, and performance data for students in the nation.

In this task, students learn to assemble a simple electrical circuit. Then, students design and conduct an investigation to compare the conductivities of different materials. Finally, students use their knowledge learned from comparing circuits having one or two light bulbs to design and conduct an investigation to determine which of two black boxes contains a light bulb.

See the test booklet.

# PART 1

You will now test Bulb 1 and Bulb 2 to make certain that they both light up. You will also answer a question about electrical circuits.

First, look at the electrical circuit shown in Diagram 4 below. Now, make a circuit using Bulb 1 that looks like the one shown in Diagram 4.

# Diagram 4

Does Bulb 1 light up? (You may need to look straight down from the top to observe the bulb clearly.)

A) Yes

B) No

Now remove Bulb 1 (in its holder) from the circuit by unhooking the clips. Put Bulb 2 (in its holder) into the circuit to make certain that Bulb 2 works.

Does Bulb 2 light up? (You may need to look straight down from the top to observe the bulb clearly.)

A) Yes

B) No

# Question 1

The electrical circuit shown in Diagram 4 is called a “complete circuit.”

What is a complete circuit?

Sample correct student response:

What did you see in Diagram 4 that tells you that the circuit is complete?

Sample correct student response:

# Question 1: Scoring Guide

Score and Description

Complete:
Student response provides a correct explanation that consists of two parts:

• gives a physical description of a complete circuit indicating a closed loop for the flow of electricity

• indicates that the light bulb lights up (goes on; turns on)

Partial:
Student response addresses one part of a correct explanation.

Unsatisfactory/Incorrect:
Student response is inadequate or incorrect.

Percentage of fourth-grade students in each response category: 2009
Complete Partial Unsatisfactory/ incorrect Omitted
6 65 28 1
NOTE: Detail may not sum to totals because of rounding.

SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2009 Science Assessment.