Students determine the average speed of a toy car as it travels six different distances set up by Students. Three trials are done for each distance. The only requirements is that the longest distance must be at least three times longer...

Students construct a pendulums and experiment with what variables change or effect the rate at which they swing through an arc. They are assessed on scientific inquiry including the following skills: observation, data collection,...

Students develop an independent procedure to investigate the germination of two types of seeds. Students must construct data tables or charts to record observations and results, graph the data, and analyze the data.

Students design and conduct and experiment to determine how invertebrates react to an outside stimulus such as light and other stimuli. Student must develop a clear plan of action, collect data in an organized manner and analyze their...

Students design and conduct an open-ended investigation using a variety of earth materials to answer a questions posed by the teacher: How does the erosion of sand compare with the erosion of gravel? After producing evidence that...

Students construct a barometer to use in an experiment that they design to measure the air pressure on a daily basis. These observations of air pressure allow students to determine how weather is affected when a storm is approaching and...

Develop life skills through the use of an AppleWorks Banking kit, a spreadsheet program, and a role play activity. This life skills activity utilizes technology plus busines and social studies principles. Note: All materials...

Students learn what the Kyoto Protocol is and examine the decision of the United States to not sign the agreement.

Students conduct a scientific investigation to determine if a magnet attracts paper clips through different materials. Students write out their procedures, collect data and present it in a table or chart, and analyze their results.

Students examine the extinction of plants and animals through loss of habitat. They investigate the effects of global warming. They use a computer model to analyze the impact of global warming on tree growth and distirbution...

Explains what alternating current and direct current are and what they are used for.

Article explores direct current circuits, alternating current circuits, and the nervous system.

[Free Registration/Login may be required to access all resource tools.] Describes the difference between direct current and alternating current.

The Canada Science and Technology Museum answers some of the most common questions about electricity. For example, get the definition of electricity, the difference between alternating and direct currents, and learn how a fuse works.

This lesson focuses on Mains Electricity and Alternating Current. Electrical supplies can be direct current (DC) or alternating current (AC). The UK mains electricity supply is about 230V at 50 Hz. It explains the difference between AC...

[Free Registration/Login may be required to access all resource tools.] Defines electric current and relates electric current to different materials (insulators and conductors).

A summation of the War of the Currents featuring Nikola Tesla and Thomas Edison against a backdrop of The Columbian Exposition and an execution.

A general summary of electrical resistance including a comparison of AC and DC current.

Explains electric current, how it produces heat, and the difference between a direct current and an alternating current.

Read here about the industrial "war" that took place between the patents on alternating and direct current.

Kids learn about electric current in the science of physics including the flow of electrons, measurement, alternating, and direct current.

Illustration showing the difference between a direct current and an alternating current.

This lesson focuses on Electrical circuits including standard symbols for electrical components, a list of components and what they do, a discussion of various types of resistors, and alternating current and direct current. Links to a...

Illustrated explanation of voltage, current, and resistance and the relationship between them.