http://musingmathematically.blogspot.ca/2012/08/gummy-bear-revisited.html
It's good to see this task continue to be refined. It has a nice mix of proportional reasoning, data collection/evaluation, and how ratios of volumes vary differently than ratios of lengths or areas.
It's good to see this task continue to be refined. It has a nice mix of proportional reasoning, data collection/evaluation, and how ratios of volumes vary differently than ratios of lengths or areas.