Heebie Jeebies Squashed Frog Prepared Slides The Heebie Jeebies Squashed Frog Prepared Slides prepared microscope slides feature all sorts of exciting things that can be studied under any compound microscope. There are seven slides per set and they come with fascinating facts about the specimens. Learn all about frogs with this amazing microscope slide kit that includes samples of frogs, their food and their habitats. The incredible detail int these professional-prepared slides make them perfect for any budding biologist. Slide length – about 8cm. Age guide: from 9 years.