3M (NYSE:MMM) has gained 33% over the past year, when including dividends, and for the company to continue that strong performance investors will expect more growth than we've seen recently. Organic growth was just 2.9% in the first quarter, which isn't impressive, but the good news is that the company is investing more in R&D to fuel growth. Motley Fool contributor Travis Hoium covers what investors should be watching for regarding 3M's stock.