I emailed the State to ask a question regarding state testing, and I received a .pdf of "The Pink Book" which is the entire 25 page document pertaining to everything related to homeschooling in the state of Washington.
Kids Discover: "Access Kids Discover's award-winning library of science and social studies material on any device, at any time, for one low price."
This place has a plethora of stuff in every subject. Totally worth visiting.
Outschool: "We believe that learning experiences can come in many forms, and from many sources. We help families customize their learning from a variety of institutions and teachers, public and private, professional and amateur. "Teacher" should be everyone's second identity. In the future, we think the most impactful learning experiences will continue to happen in a group setting where participants can interact with a teacher and each other. We aim to facilitate connections through shared learning experiences and so create a vibrant and safe community of self-reliant, life-long learners. We started Outschool with the belief that we can use technology to make learning more flexible and personal than before. We can now answer "what, where, when and who?" more dynamically than a single location, curriculum and class planned months or even years in advance."