SC15.4.7 | ALEX

Science (2015) Grade(s): 4

Developing and Using Models

Patterns

Students know:

About digitized information transfer. (e.g., information can be converted from a sound wave into digital signals such as patterns of 1s and 0s and vice versa; visual or verbal messages can be encoded in patterns of flashes of light to be decoded by someone else across the room).
Ways that high-tech devices convert and transmit information. (e.g., cell phones convert sound waves into digital signals, so they can be transmitted long distances, and then converted back into sound waves; a picture or message can be encoded using light signals to transmit the information over a long distance).
Information can be transmitted over long distances without significant degradation. High tech devices, such as computers or cell phones, can receive and decode information - convert form to voice - and vice versa.

Students are able to:

Generate multiple design solutions that use patterns to transmit a given piece of information.
Apply the engineering design process to develop a model to show multiple solutions to transfer information.
Describe the given criteria for the design solutions.
Describe the given constraints of the design solutions, including the distance over which information is transmitted, safety considerations, and materials available.

Students understand that:

Similarities and differences in the types of patterns used in the solutions to determine whether some ways of transmitting information are more effective than others and addressing the problem.

Secret Messages

Code to Picture