I have not been much of a blogger because I am concentrating all my efforts on getting the new edition out before the end of the summer. The most important change I am doing is making many of the activities easier and more uniform in the amount of effort needed. I had to do this to deal with my new teaching situation. I am also trying to incorporate new activities and fix some glitches in some old activities. One significant glitch involves the use of thiosulfate to neutralize the toxic effec...
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