Small world/construction area. All resources are as non prescriptive as possible opening up the scope for different uses, and are changed half termly to match the children's current needs and interests.
My grader enjoyed an inquiry-based insect study with nature as his learning lab. The post includes a great list of living literature, too. It's fun to search for signs of insects during an animal signs study.
This anchor chart would be a great way to integrate science into reading. This chart would be an easy way for students to look at insects and see what they are, can, and have. They could then use these things to write about an insect.