Hi @asrao2k14
There is no simple answer to your question, however....................
First things first. A significantly large percentage of the members of this community are teachers, and many of them are K-12 teachers. I strongly suspect that most, likely all, of them are offended by the reference "slow learners". I, personally, would hope that you edit your question to remove that offensive label.
Your best bet for ensuring that all your learners experience an equitable opportunity to achieve the learning outcomes of your courses would be to apply Universal Design for Learning (UDL) principles to your course design and instructional practices.
The most respected site for learning about UDL is CAST where not only are the guidelines well explained, but also includes lots of examples of best UDL practices.
Universal design practices will help ALL of your students succeed, and the online learning environment is especially good for practicing UDL.
Kelley
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