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I apologize for the delay in getting the next lesson to you. I have been trying to improve the Learnalong, while trying to answer new questions brought up by new information.
Thanks to the results you sent in, we are getting closer to determining which chemical(s) in the coloring are causing the motion.
I need some help with the current Learnalong Investigation. This is the part where I learn. The first lesson went great. 596 people watched the video, and I got over 40 wonderful responses describing your investigations.
I expected Lesson 2 to be even more fun, giving you two ways to succeed, and opening the door for you to experiment with the coloring. Instead, only 188 people watched the video, and I got only 2 responses.