CMAS Test Prep: Grade 3 English Language Arts Literacy (ELA) Practice Workbook and Full-length Online Assessments: Colorado Measures of Academic Success Study Guide (CMAS by Lumos Learning)

Want to boost your child’s Grade 3 ELA skills and Colorado CMAS readiness?

Lumos’ Colorado CMAS blended program (Workbook + Online Access) helps your child improve scores by 10% or more* in the 2025-26 CMAS assessment through realistic test simulations, targeted skills practice, and AI-powered intervention.

This blended program includes:

• Practice questions covering 40+ Grade 3 ELA skills in pen and paper format
• Answer keys with detailed explanations in the workbook
• 2 full-length online practice tests that simulate Colorado’s CMAS
• Personalized online study plan for targeted practice
• AI Tutor for clear step-by-step explanations, hints, and instant feedback
• Online program access code

Trusted by over 1.6 Million students and 200,000 teachers.

Reduce your child's CMAS test anxiety using Lumos' Smart Test Prep Methodology

Lumos’ Smart Test Prep Methodology blends realistic Colorado test simulations, personalized guidance, and targeted practice to help students get ready for the state test.

Students begin with a simulated CMAS test, follow an AI-personalized study plan, practice essential skills, and repeat the cycle—steadily building the skills and confidence they need for the Spring CMAS.

Why is Lumos' CMAS Practice Workbook the Smart Choice for 2025–26?

• Realistic Practice Tests: Two full-length tests that simulate CMAS format, question types, rigor, standards, and pacing
• Personalized Study Plan: Online Diagnostic Tests generate a personalized study plan for targeted skills practice using the workbook
• Lumos AI Tutor: A built-in, on-demand AI coach that delivers real-time assistance just like a personal tutor
• Online Program Access: Features guided practice questions, solved examples, a performance insights dashboard, videos, mind maps, flashcubes, and other engaging test prep resources

Why Parents Trust Lumos tedBook for Colorado CMAS Success?

Lumos has a history of delivering measurable results. Its realistic test preparation builds confidence, and the performance reports offer clear insights into strengths and areas for improvement. With Lumos tedBook, families feel assured that their child is fully prepared to succeed on the Colorado state assessment.

“This book is awesome—I’ve bought it two years in a row. We used it to study for the CMAS ELA in 3rd grade and the CMAS ELA in 4th grade, and my child aced both tests with a score of 4. The online resources that come with the book are amazing. Kids can practice online tests and individual lessons as many times as they want.” — Jessenia

How Do Teachers Use Lumos tedBook in Their Classroom?

Teachers use Lumos tedBook to deliver personalized, standards-aligned practice that reinforces classroom learning. In addition to giving students the opportunity to experience a realistic CMAS simulation, Lumos Teacher Accounts provide access to insightful reports and guided classroom instructions to bridge learning gaps, track progress, and build student confidence for the CMAS assessment. It’s ideal for classroom reinforcement, tutoring, or homeschooling.

“Amazing resource for practicing 3rd-grade ELA state benchmark test! The data collection and analysis tools are exactly what I need to measure growth and predict pass/fail outcomes for upcoming benchmarks.” — Ashia Smith

Prepare with confidence—order now and get ready for CMAS success!

Also available for Grade 3 Math CMAS Practice.

*10%+ improvement in state assessment scores is based on students who used the program consistently for about 45 minutes per week. Individual results may vary based on usage and completion of practice tests and the study plan.