Generosity - an approach to fractions and percentages.
This unit uses the context of generosity to introduce a need to have a fractional way of thinking about something. It develops a way of thinking about fractions - the for-every idea - that is the elusive multiplicative model. Developed over about 5 years, this approach has been tried and seems to work. :)
The materials used at the workshop can be downloaded below.
many_ways_fractions_three-fifths.pdf