This free course was written by Martin Weller and Nigel Gibson.
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Figure 1: Blatant World in Flickr https://creativecommons.org/licenses/by/2.0/
Figure 2: VelcrO in Flickr https://creativecommons.org/ licenses/ by/ 2.0/
Figure 3: Ron Porter/Pixabay.com
Figure 4: TWITTER – Photograph: Esther Vargas https://www.flickr.com/photos/esthervargasc/9474487682/
Figure 5: Milan Stankovic in Flickr https://creativecommons.org/ licenses/ by/ 2.0/
Figure 6: Kit Ng in Flickr https://creativecommons.org/ licenses/ by-nc-nd/ 2.0/
Figure 7: Jerry “Woody” in Flickr https://creativecommons.org/licenses/by-sa/2.0/
Figure 8: Bousure in Flickr https://creativecommons.org/ licenses/ by-nc-nd/ 2.0/
Figure 9: Mani Babbar Photography in Flickr https://creativecommons.org/ licenses/ by-nc-nd/ 2.0/
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