100%...in our case it was 'do 1% of the cleaning/wiping/scrubbing'. As if I haven't outed myself to any of my students reading this...we do it on the first day

100%...in our case it was 'do 1% of the cleaning/wiping/scrubbing'. As if I haven't outed myself to any of my students reading this...we do it on the first day in my stats class: Spend the day collecting data using the board game operation. I tell you the categories of data to collect, I don't tell you exactly how to collect the data. Then you clean that data for homework...the discussion about whether that data is good quality creates a lot of insight.