Oh, I know you said that you tend to have an easier time finding science stuff, but there is a great series of books called "Let's Read-and-Find-Out Science" that is great. The books in the series listed as Stage 1 are intended to explain simple science concepts for preschoolers and kindergarteners while the Stage 2 books are intended to explore more challenging concepts for children in the primary grades. They all have great pictures, engaging writing, and an experiment at the end. HTH!

She thought she could, so she did.