A popular all-in-one option is Book Shark. It includes everything you need based on ability level and is great if you have more than one child in different grade levels.
If you need books based on subject or grade, ArgoPrep is an excellent resource and every workbook has free video explanations so any child can learn the material without the frustration. They can watch the how and why to any problem on any page. Their Summer and Winter Academy workbooks include all subjects including a PE section and is separated into weeks with different subjects for different days.
https://www.argoprep.com/k8?fpr=victoria_
For 20% off your purchase, use code POSADA20
Christian-based homeschooling resources:
Comprehensive, biblically-based curriculum, textbooks, teaching aids and more for Preschool–Grade 12, with a proven spiral learning approach.
Easy-to-use homeschool program with complete lesson plans, schedules, and materials from preschool through high school. Sonlight is the complete literature-based, Christian homeschool curriculum that includes everything you need to teach your children: homeschool history, math, science, and more!
Apologia provides creation-based, K-12 homeschool curriculum that equips and empowers you to help your students reach their academic goals and nurture their love of God.
AOP has been the leader in award-winning, Christian homeschooling for over 40 years!
Homeschool Options for Every Type of Homeschool
With print, online, and academy options, we make your job easier. Find the perfect option for your family's needs.
A good site for multiple, purchasable resources of many brands and types:
https://www.christianbook.com/?navcat=toplogo
Above are direct links to book-based curriculum authors and their resources on ChristianBook.com