My 2nd grader enjoyed an inquiry-based insect study with nature as his learning lab. The post includes a great list of living literature, too. Insect study is a great go-along or follow-up to wildflower study.
A set of insects themed lined paper and page borders for your English writing composition or Maths problem solving activity. Download for FREE at: http://www.sharemylesson.com/teaching-resource/Insects-Themed-Lined-Paper-and-Pageborders-50011368/