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Building an Electromagnet

(Complete Item Description)

Abstract:: Student teams investigate the properties of electromagnets. They create their own small electromagnet and experiment with ways to change its strength to pick up more paper clips. Students learn about ways that engineers use electromagnets in everyday applications.

Subject:: Mathematics and Statistics, Science and Technology
Grade Level:: Primary
Collection:: TeachEngineering

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Cereal Magnets

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Abstract:: In this activity, students will design a process that removes the most iron from the cereal. This activity is meant for the students to experiment with different materials using what they know about iron, magnets, and forces to design the best process for removing the iron from the cereal.

Subject:: Mathematics and Statistics, Science and Technology
Grade Level:: Primary
Collection:: TeachEngineering

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Find Your Own Direction

(Complete Item Description)

Abstract:: In this activity, students create their own simple compass using thread, needle and water in a bowl and learn how it works.

Subject:: Mathematics and Statistics, Science and Technology
Grade Level:: Primary
Collection:: TeachEngineering

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Force on a Current Carrying Wire

(Complete Item Description)

Abstract:: Students use a simple set up consisting of a current carrying wire and a magnet to explore the forces which enable biomedical imaging. In doing so, students run a current through a wire and then hold magnets in various positions to establish and explore the magnetic force acting on the wire. They move the magnets and change the current in the wire to explore how the force changes.

Subject:: Mathematics and Statistics, Science and Technology
Grade Level:: Secondary
Collection:: TeachEngineering

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Fortified Breakfast

(Complete Item Description)

Abstract:: In this lesson, students will learn that minerals are a necessary part of our diet. They will learn that different minerals have different functions in the body. More specifically, they will discover that iron is necessary to carry oxygen around the body. In the associated activity, students will design a process that removes the most iron from the cereal.

Subject:: Mathematics and Statistics, Science and Technology
Grade Level:: Primary
Collection:: TeachEngineering

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Get Your Motor Running

(Complete Item Description)

Abstract:: Students investigate motors and electromagnets as they construct their own simple electric motors using batteries, magnets, paper clips and wire.

Subject:: Mathematics and Statistics, Science and Technology
Grade Level:: Primary
Collection:: TeachEngineering

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Induced EMF in a coil of wire

(Complete Item Description)

Abstract:: Students use a simple set up consisting of a coil of wire and a magnet to visualize induced EMF. First, students move a coil of wire near a magnet and observe the voltage that results. They then experiment with moving the wire, magnet, and a second, current carrying coil. Students connect the coil to a circuit and the current from the induced EMF charges a conductor.

Subject:: Mathematics and Statistics, Science and Technology
Grade Level:: Secondary
Collection:: TeachEngineering

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Magnetic Attraction

(Complete Item Description)

Abstract:: Students complete a series of six short investigations involving magnets to learn more about their properties. Students also discuss engineering uses for magnets and brainstorm examples of magnets in use in their everyday lives.

Subject:: Mathematics and Statistics, Science and Technology
Grade Level:: Primary
Collection:: TeachEngineering

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A Magnetic Personality

(Complete Item Description)

Abstract:: Students learn about magnets and how they are formed. They investigate the properties of magnets and how engineers use magnets in technology. Specifically, students learn about magnetic memory storage, which is the reading and writing of data information using magnets, such as in computer hard drives, zip disks and flash drives.

Subject:: Mathematics and Statistics, Science and Technology
Grade Level:: Primary
Collection:: TeachEngineering

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NASA KSNN Does an electromagnet work like a regular magnet?

(Complete Item Description)

Abstract:: Compare an electromagnet to a regular magnet and experiment with factors that affect the strength of an electromagnet.

Subject:: Science and Technology
Grade Level:: Primary
Collection:: NASA Kids Science News Network (NASA KSNN)

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NASA KSNN Why do magnets work?

(Complete Item Description)

Abstract:: Magnetism is an invisible force felt within the space around a magnet. This space, called the magnetic field, can either attract (pull) or repel (push away) other magnets and some types of metal

Subject:: Science and Technology
Grade Level:: Primary
Collection:: NASA Kids Science News Network (NASA KSNN)

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Slingshot to the Outer Planets

(Complete Item Description)

Abstract:: Students are introduced to the engineering challenges involved with interplanetary space travel. In particular, they learn about the gravity assist or "slingshot" maneuver often used by engineers to send spacecraft to the outer planets. Using magnets and ball bearings to simulate a planetary flyby, students investigate what factors influence the deflection angle of a gravity assist maneuver.

Subject:: Mathematics and Statistics, Science and Technology
Grade Level:: Primary
Collection:: TeachEngineering

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Slinkies as Solenoids

(Complete Item Description)

Abstract:: In this activity, students use an old fashion children's toy, a metal slinky, to mimic and understand the magnetic field generated in an MRI machine. The metal slinky mimics the magnetic field of a solenoid, which forms the basis for the magnet of the MRI machine. Students run current through the slinky and use computer and calculator software to explore the magnetic field created by the slinky.

Subject:: Mathematics and Statistics, Science and Technology
Grade Level:: Secondary
Collection:: TeachEngineering

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Two Sides of One Force

(Complete Item Description)

Abstract:: Students learn more about magnetism, and how magnetism and electricity are related in electromagnets. They learn the fundamentals about how simple electric motors and electromagnets work. Students also learn about hybrid gasoline-electric cars and their advantages over conventional gasoline-only-powered cars.

Subject:: Mathematics and Statistics, Science and Technology
Grade Level:: Primary
Collection:: TeachEngineering

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Visualizing Magnetic Field Lines

(Complete Item Description)

Abstract:: In this activity, students take the age old concept of etch-a-sketch a step further. Using iron filings, students begin visualizing magnetic field lines. To do so, students use a compass to read the direction of the magnet's magnetic field. Then, students observe the behavior of iron filings near that magnet as they rotate the filings about the magnet. Finally, students study the behavior of iron filings suspended in mineral oil which displays the magnetic field in three dimensions.

Subject:: Mathematics and Statistics, Science and Technology
Grade Level:: Secondary
Collection:: TeachEngineering

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Yogurt Cup Speakers

(Complete Item Description)

Abstract:: This lesson introduces students to the role of electricity and magnetism as they build a speaker. In addition, students explore properties of magnets, create an electromagnet, and determine the direction of a magnetic filed. They conduct a scientific experiment and show cause-effect relationships by monitoring changes in the speaker's movement as the amount or the direction of the current change.

Subject:: Mathematics and Statistics, Science and Technology
Grade Level:: Primary, Secondary
Collection:: TeachEngineering

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