Update docs/images/week12/alg5.gif, docs/images/week12/IMG_9941.jpg, docs/images/week12/ALGINATE1.gif, docs/images/week12/alg6.gif, docs/images/week12/alg4.gif, docs/images/week12/alg3.gif, docs/images/week12/IMG_9890.jpg, docs/images/week12/IMG_9896.jpg, docs/images/week12/IMG_9895.jpg, docs/images/week12/alginate2.gif, docs/images/week12/IMG_9827.jpg