This tutorial introduces the concept of electric currents. Take the interactive quiz to assess your understanding.

This lesson focuses on electric charges. Electric current is the flow of electric charge. Some insulating materials become electrically charged when they are rubbed together. A substance that gains electrons becomes negatively charged,...

Students build a saltwater circuit, which is an electrical circuit that uses saltwater as part of the circuit. Students investigate the conductivity of saltwater, and develop an understanding of how the amount of salt in a solution...

This lab demonstrates Ohm's law as students set up simple circuits each composed of a battery, lamp and resistor. Students calculate the current flowing through the circuits they create by solving linear equations. After solving for the...

Brush up on electricity facts before taking this interactive quiz. Students can get immediate feedback by checking the answers after each question.

Teacher directed activity shows students how flowing electrical current produces a magnetic field by building a simple motor.

Students teams each use a bar magnet, sheet of paper and iron shavings to reveal the field lines as they travel around a magnet. They repeat the activity with an electromagnet made by wrapping thin wire around a nail and connecting...

Students are presented with a short lesson on the Coulter principle, an electronic method to detect microscopic particles and determine their concentration in fluid. Depending on the focus of study, students can investigate the...

[Free Registration/Login Required] This flipchart provides an introduction to electrical power to be used for AP Physics with calculus.

Easy-to-read information and an illustration of an "electromagnet," a type of magnet in which the magnetic field is induced by the flow of an electric current.

Practice identifying the direction of current flow, closed circuits, and open circuits with this multiple choice quiz.

Determine the resistance of a wire based on its composition and its physical dimensions. Find the current that would flow through the wire when the wire is connected to a certain voltage.

[Free Registration/Login Required] Students can use this Flipchart to learn and apply Ohm's law to basic circuitry problems. Students are introduced to the relationship among voltage, current, and resistance, and then apply their newly...

[Free Registration/Login Required] A basic interactive lesson on Ohm's Law, I use this in my 9-12 CATE Electricity class.

[Free Registration/Login Required] Learn about electric circuits, the flow of current, electrical resistance, and electrical power dissipation by exploring the operation of a flashlight using this interactive simulation. A PDF worksheet...

A guided inquiry that involves observation of the parts of a light bulb in a lab.

A teacher lesson plan which could be easily converted into an idea for a student project or presentation. This page describes an activity in which the basic nature of a circuit and the concepts of a series circuit are investigated....