We have used this program for the last few years. Overall I find it to be an excellent program. Note that it is a Christian publisher. To find out more visit here. I have several reviews on my social media, feel free to visit there. I love the pre-packaged science kits that assist this program.
OTHER SCIENCE ADDITIONS:
Magic School bus experiment Kits . Also check out their books and videos
Science Expeditions (from Little Passports)
Popular Mechanics for Kids _ Youtube Videos