An excellent way to learn more about a JPL space exploring machine, and its mission, is to build a scale model. Spend some time assembling one, and you'll be sure to know the spacecraft very well indeed!
The scale models offered here have parts for you to download and print on card stock, instructions for putting them together, and links to mission information. Everything you need, such as white glue, scissors, etc. is listed. Some are quick and easy to assemble. Others require several hours' time and great care.
In general, these remarkable scale models may be inappropriate for people younger than about age 12, depending largely on motivation. Sometimes you'll find copies of these assembled models on the desks of engineers and scientists, using them for reference in their space mission.
A word of caution: some require use of a sharp art knife, so if children are involved, strict adult supervision is required.
Model of Cassini spacecraft "bus" compared to a thumb (on left).