Several types of concept maps (in INTERACTIVE pdf format) This means you can link to them, students can access them, complete them, save and turn in electronically. They can also be downloaded and printed if there's little to no access to classroom computers.
Or do some collaborative/small group work. Have small groups of students complete a task, work together on completing and explain/defend their concept map to whole group.
Non-linguistic representations are a high impact teaching strategy that work especially well with visual learners. Consider using these for organization, pre-writing, summaries, etc.
Excellent Reading Resource that specifically addresses a wide variety of reasons WHY children struggle with reading and HOW to help them overcome that particular obstacle.