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OpenSciEd Unit 8.3: Forces at a Distance Spanish Student Edition

Author(s): NATIONAL CENTER FOR

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OpenSciEd Middle School science program addresses all middle school NGSS standards. This comprehensive science curriculum empowers students to question, design, investigate, and solve the world around them. 

  • Phenomenon Based - Centered around exploring phenomena or solving problems
  • Driven by Student Questions - Storyline based on students’ questions and ideas 
  • Grounded in Evidence - Incremental building and revision of ideas based on evidence 
  • Collaborative - class and teacher figure out ideas together
  • Equitable - Builds a classroom culture that values ideas and learning of all

 

The OpenSciEd model uses a storyline approach, introducing phenomena that anchors storylines developing disciplinary core ideas, concepts, and science/engineering practices. Students are encouraged to dive deep into key points and solve problems through five activities. Students kick off a unit of study, investigate questions, piece together the puzzle in investigations, and problematize the next set of questions to investigate. 

 

Unit 8.3: How can a magnet move another object without touching it?

This unit launches with a slow-motion video of a speaker as it plays music. In the previous unit, students developed a model of sound. This unit allows students to investigate the cause of a speaker’s vibration in addition to the effect.

Students dissect speakers to explore the inner workings, and engineer homemade cup speakers to manipulate the parts of the speaker. They identify that most speakers have the same parts–a magnet, a coil of wire, and a membrane. Students investigate each of these parts to figure out how they work together in the speaker system. Along the way, students manipulate the components (e.g. changing the strength of the magnet, number of coils, direction of current) to see how this technology can be modified and applied to a variety of contexts, like MagLev trains, junkyard magnets, and electric motors.

Lesson 1: What causes a speaker to vibrate?

Lesson 2: What can a magnet pull or push without touching?

Lesson 3: How does energy transfer between things that are not touching?

Lesson 4: What can we figure out about the invisible space around a magnet?

Lesson 5: How does the magnetic field change when we add another magnet to the system? Lesson 6: How can we use magnetic fields to explain interactions at a distance between the magnet and the coil?

Lesson 7: How does changing the distance between two magnets affect the amount of energy transferred out of the field?

Lesson 8: How does the energy transferred from a battery to a wire coil compare to the energy transferred from a computer to a speaker?

Lesson 9: How do the magnet and the electromagnet work together to move the speaker?

Lesson 10: How does distance affect the strength of force pairs in a magnetic field?

Lesson 11: What else determines the strength of the force pairs between two magnets in a magnetic field?

Lesson 12: What cause-effect relationships explain how magnetic forces at a distance make things work?

 

NATIONAL CENTER FOR

OpenSciEd®​ was launched to improve the supply of and address the demand for high-quality, open-source, full course science instructional materials.  The goals of OpenSciEd are to ensure any science teacher, anywhere, can access and download freely available, high quality, locally adaptable materials.  Though the goal of providing full course materials is still a couple of years away, OpenSciEd is releasing six-week units of instruction as they are completed and externally evaluated as quality by Achieve’s Science Peer Review Panel.

OpenSciEd classroom materials are an open education resource and therefore free to download, copy, use, and/or modify.  You can download the instructional materials free of charge at Access Materials page on the OpenSciEd website.

In an effort to lower barriers for all educators to use OpenSciEd, Kendall Hunt and OpenSciEd have partnered to sell high quality printed books, professional learning and lab kits.