Graphing data is no longer for high schoolers because Key Curriculum Press’s TinkerPlots can help those in grades four through eight to visualize numerical trends and learn statistics and probability without pain. The program’s Sampler lets kids and teachers try out ideas with mathematical simulations. There are versions for PC and Macs and you can try the full program for 20 minutes before buying it. A single copy costs $50, while a school or district can license it for $10 per seat. On top of how-to videos, the new version has a slew of new activities, like weighing backpacks or random coin flips, that can become instant lesson plans.