Hi Olivia,
Certainly you’d have a more substantial conclusion at the end of the section, but it’s still generally appropriate to have some sort of concluding sentence at the end of each paragraph (summing up the particular topic of that paragraph, not the whole section). This is just a guideline to help you construct effective paragraphs though; if in a particular case you find it’s smoother to not have a concluding sentence, don’t feel that you have to force it.
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