If you use Google products for education, I HIGHLY RECOMMEND that you consider following
@alicekeeler on Twitter. She is a Google pro imo & regularity posts Google Classroom tips & tricks, very very helpful stuff!
@MPMSleopards
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I did this as well. Pro Tip: If you have Meet times or Office Hours like out school, you can add the info in the header. Click on the settings cog (I call it the Fidget Spinner) & add info in the Section part of the Class Details. Sorry for the cheesy foto. Gets the point across.