A young African American girl named Libby loves the mixing, measuring, pouring, and stirring involved in science, whether it's baking pancakes or making a foaming fountain in science class. However, Libby doesn't always follow directions precisely. When she and her friends volunteer to run the science booth at their school fair, they have some great ideas for giant bubbles, fluffy slime, and bottle rockets; but Libby's imprecise measuring causes trouble. Includes a worksheet for each experiment mentioned.