I'm not sure how Beast Academy works, but the only science curriculum we have found to be absolutely ideal on every level is superchargedscience.com Best of all the kids can do it on their own! It's a monthly subscription that you pay and it's online. SO worth it!
In fact, we have promised Aiden that when he starts working more independently in all other areas and is solid on grade 4 level across all subjects that we will be buying him a full subscription and building a science lab. THAT's how awesome just the free stuff is.
