The full scientific activities of the Sugimori Sisters, together in one experimental collection!

The Scientific Adventures:

Sixth-grader Ellen Sugimori just wants to be a normal American kid, one who doesn't have to go to Japanese school every Saturday. First-grader Risako Sugimori wants to be a scientist. Despite Ellen's best efforts, Risako's mysterious prototype machines get the two of them into all sorts of tricky situations.

From crash landings on the surface of Mars to unintended travels through time, from undersea explorations to malfunctioning multiplier machines, getting back home in time for dinner always takes some drastic measures!

Further Scientific Mayhem!

Ellen is a sixth-grader with normal sixth-grader problems. Risako is a first-grader with a collection of scientific gadgets all calibrated to solve them. If only the calibration weren't so off-kilter.

From a misdirected teleporter to an irritating shrink ray, from an uncooperative chemistry set to a camera that does more than take pictures, these wonky gadgets will have Ellen and Risako using all their wits to keep their parents from grounding them!

The Holiday Experiment Files:

'Tis the season to do science!

Ellen Sugimori enjoys the magic of the holidays. Too bad Little Sister Risako has to go and ruin it with her science experiments.

From an unlucky Valentine's Day to a haunted Halloween library visit, from a Christmas Eve misadventure to planning the perfect New Year's Eve party, the sisters will need every step of the scientific method to pull these holiday plans off without a hitch!