Make a class word closet to refer to when spelling words associated with different domains. Brainstorm as a class words associated with the topic at hand. Write them correctly on the poster paper, and attach the paper to a coat hanger to keep in the class word closet. Whenever learners need to use those words, just pull the relevant hanger from the closet and use it as reference. I appreciate how this program (great to use all year) fosters ownership and independence. Let your scholars get out the proper hangers whenever they need them.