Electricity and Circuits
How do you build a circuit? The Modular Circuits kit provides an easy and quick way to prototype and design electronic circuits. This investigation explores...
Voltage and Batteries
How do you connect batteries to increase their total voltage? When Alessandro Volta invented the first electric battery, he connected several individual...
Design a Lemon Battery
Design a battery using different metals inserted into a lemon. Test the effect of different metals. Use a voltage sensor to measure voltage.
Resistors and Ohm’s Law
How is resistance measured? Ohm's law I = V/R is the fundamental relationship between current, voltage, and resistance in a circuit. Devices that measure...
Series and Parallel Resistances
What are the advantages and disadvantages of series versus parallel circuits? Have you ever had a string of holiday lights where one bulb is burned out,...
Electrical Power
How is power related to energy? What determines the power rating of a device? Electrical devices are commonly rated in units of power, such as a 100-W...
Compound Circuits
How can voltage, current, and power be used to predict the behavior of electric circuits? In the first part of this investigation, you will predict the...
Magnification of mirrors and lenses
What kinds of images can be made by lenses and mirrors? Mirrors change the direction of light through reflection. Lenses bend the direction of light through...
Reflection in a Plane Mirror
How and where does an image form in a mirror? If you look at yourself in a mirror, then where is your image located? In this investigation, you will use...
Refraction of Light
How does light refract at a boundary? What is the index of refraction of water? Refraction may change the direction of light rays passing from one medium...
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