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Modern technology: advantages and disadvantages

от Jose QF

Mars

от Tina Webb

What is Communication?

от Thomas Murphy

What's Out There? Resources to support the work of K-12 Classroom Educators in Ontario (OERB, vLe, OSAPAC, Edugains/Edusource) August 2015

от Joe Russo

Common Core State Standards Connections: ELA/Literacy - MP.2 Reason abstractly and quantitatively.

Common Core State Standards Connections: ELA/Literacy - RST.9-10.8 Assess the extent to which the reasoning and evidence in a text support the author’s claim or a recommendation for solving a scientific or technical problem.

Disciplinary Core Ideas

PS4.A: Wave Properties

[From the 3–5 grade band endpoints] Waves can add or cancel one another as they cross, depending on their relative phase (i.e., relative position of peaks and troughs of the waves), but they emerge unaffected by each other.

Information can be digitized (e.g., a picture stored as the values of an array of pixels); in this form, it can be stored reliably in computer memory and sent over long distances as a series of wave pulses.

The wavelength and frequency of a wave are related to one another by the speed of travel of the wave, which depends on the type of wave and the medium through which it is passing.

Science and Engineering Practice

Asking Questions and Defining Problems

Engaging in Argument from Evidence

Using Mathematics and Computational Thinking

HS. Waves and Electromagnetic Radiation

HS-PS4-3. Evaluate the claims, evidence, and reasoning behind the idea that electromagnetic radiation can be described either by a wave model or a particle model, and that for some situations one model is more useful than the other.

HS-PS4-4. Evaluate the validity and reliability of claims in published materials of the effects that different frequencies of electromagnetic radiation have when absorbed by matter.

HS-PS4-5. Communicate technical information about how some technological devices use the principles of wave behavior and wave interactions with matter to transmit and capture information and energy.

HS-PS4-2. Evaluate questions about the advantages of using a digital transmission and storage of information.

HS-PS4-1. Use mathematical representations to support a claim regarding relationships among the frequency, wavelength, and speed of waves traveling in various media.