1. Electrical systems in the community

2. Designed solutions that use electricity to control movement, light and sound are all around us.

3. Pedestrian crossings have been around a long time like these ones in ancient Pompeii.

4. We can see a similar design in some of the crossings in our local communities.

5. Others have been redesigned.1 3 2

6. Why was there a need to redesign some pedestrian crossings?1 3 2
What changes have been made to the design? How does it meet community needs?

7. Electrical engineers design many items we see or use every day.

8. At home How do these devices use electrical energy to meet our needs?2 1
How do these devices use electrical energy to meet our needs? 3

9. At school
How many designed solutions can you find in your classroom that use electrical energy to control movement, light and sound?

10. There are many examples in our communities.1 2 3

11. Brainstorm designed solutions that use electricity to control movement, light or sound.
Consider:
what need they meet
how light, sound and movement contribute to the design.

12. Attributions Slide Image Attribution 2
Nicholas Kaeser 2014, Brisbane by night – Brisbane CC BY-NC 2.0 creativecommons.org/licenses/by-nc/2.0/ 3
Lau Svensson 2011, Pompeii street CC BY 2.0 creativecommons.org/licenses/by/2.0/ 4
Ash Kyd 2012, Zebra Crossing CC BY 2.0 creativecommons.org/licenses/by/2.0/ 5 1
Rowen Atkinson 2007, Stay where you are CC BY-NC 2.0 creativecommons.org/licenses/by-nc/2.0/
Sankarshan Mukhopadhyay 2009, img_5330.jpg
CC BY-SA 2.0 creativecommons.org/licenses/by-sa/2.0/
James 2006, Pedestrian crossing CC BY-SA 2.0 creativecommons.org/licenses/by-sa/2.0/ 6
Lau Svensson 2011, Pompeii street CC BY 2.0 creativecommons.org/licenses/by/2.0/
CC BY-SA 2.0 creativecommons.org/licenses/by-sa/2.0/ 8
Barry 2006, DILODEC06_S CC BY-NC-SA-2.0 creativecommons.org/licenses/by-nc-sa/2.0/
Anthony Agius 2009, New Toaster CC BY-NC-ND 2.0 creativecommons.org/licenses/by-nc-nd/2.0/ 10
Ervins Strauhmanis 2014, Security camera CC BY 2.0 creativecommons.org/licenses/by/2.0/
Michael Coghlan 2009, Sentinel CC BY-NC-SA-2.0 creativecommons.org/licenses/by-nc-sa/2.0/
Brian Yap (葉) 2007, barrier CC BY-NC 2.0 creativecommons.org/licenses/by-nc/2.0/