World Book is granting free access during COVID-19 through April 30th. I’ve highlighted some of the pages on their site that I think you could use.
LOGIN at World Book Online
Once you log in, here are a few pages I’ve pulled out that I think you might really find useful as you Homeschool for College Credit. Also note that they have a ton of content for students up through grade 6 if you have younger kids.
If you find any great pages on this site, please share below!