Points Rationale 4 Student’s response is acceptable and demonstrates understanding that a prototype is a working model used to test a design concept by making actual observations and necessary adjustments 3 Student’s response has at least one flaw in understanding that a prototype is a working model used to test a design concept by making actual observations and necessary adjustments 2 Student’s response has more than one flaw in understanding that a prototype is a working model used to test a design concept by making actual observations and necessary adjustments 1 Student’s response is lacking in understanding that a prototype is a working model used to test a design concept by making actual observations and necessary adjustments 0 Student does not attempt to answer PTS: 4 7. ANS: Answers will vary, sample response: ADVANTAGES: models provide a visual representation of a conceptual design; models can be built first, tested and modified before building the real thing; models can be more cost-effective; models could be a time-saver in the long run. DISADVANTAGES: some real problems may not manifest themselves in models that do show up in the real thing; models must be constructed carefully to be a realistic representation of the real thing; models are predictions and estimations, some people may not find them believable. Points Rationale 4 Student’s response lists 2 acceptable advantages and 2 acceptable disadvantages 3 Student’s response is missing an advantage or disadvantage AND/OR lists an unacceptable advantage or disadvantage 2 Student’s response lists only advantages or disadvantages and are unacceptable 0 Student does not attempt to answer PTS: 4 8. ANS: Answers will vary, sample response: An accelerometer is a measuring tool that allows you to measure how much something is speeding up or slowing down. It can even tell if you have tilted or turned something, like your iPad or Wii controller. Points Rationale
Points Rationale 4 Student’s response is acceptable and demonstrates understanding that a prototype is a working model used to test a design concept by making actual observations and necessary adjustments 3 Student’s response has at least one flaw in understanding that a prototype is a working model used to test a design concept by making actual observations and necessary adjustments 2 Student’s response has more than one flaw in understanding that a prototype is a working model used to test a design concept by making actual observations and necessary adjustments 1 Student’s response is lacking in understanding that a prototype is a working model used to test a design concept by making actual observations and necessary adjustments 0 Student does not attempt to answer PTS: 4 7. ANS: Answers will vary, sample response: ADVANTAGES: models provide a visual representation of a conceptual design; models can be built first, tested and modified before building the real thing; models can be more cost-effective; models could be a time-saver in the long run. DISADVANTAGES: some real problems may not manifest themselves in models that do show up in the real thing; models must be constructed carefully to be a realistic representation of the real thing; models are predictions and estimations, some people may not find them believable. Points Rationale 4 Student’s response lists 2 acceptable advantages and 2 acceptable disadvantages 3 Student’s response is missing an advantage or disadvantage AND/OR lists an unacceptable advantage or disadvantage 2 Student’s response lists only advantages or disadvantages and are unacceptable 0 Student does not attempt to answer PTS: 4 8. ANS: Answers will vary, sample response: An accelerometer is a measuring tool that allows you to measure how much something is speeding up or slowing down. It can even tell if you have tilted or turned something, like your iPad or Wii controller. Points Rationale
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