For a free alternative, the Open Textbook Library offers peer-reviewed algebra texts. Image and Specifications Introduction to Algebra: Rusczyk, Richard - Amazon.com
You can purchase the physical copy or find course information directly on the Art of Problem Solving website. Where to Find Materials Online Download Introduction Algebra 725x1024 jpg
This textbook is a standard for high-achieving students in grades 6–9. It focuses on problem-solving rather than rote memorization. For a free alternative, the Open Textbook Library