K–12 Content and Curriculum Development | Six Red Marbles Skip to main content
K–12 Learning Partner

Standards-Aligned Learning Experiences That Actually Work

From full curriculum builds to targeted content refreshes, Six Red Marbles helps publishers, edtech companies, and K–12 organizations develop engaging, rigorous instructional materials—on time, on brand, and built to last.

  • Standards-aligned curriculum for PreK–12, mapped to Common Core, NGSS, WIDA, and state frameworks
  • Engaging digital learning experiences — interactive, accessible, and built for today's classrooms
  • End-to-end editorial support, from program blueprinting to final fact-check
  • Scalable solutions for publishers, edtech platforms, and learning organizations of any size
  • 30 years of proven expertise — thousands of learning experiences delivered
Trusted by leading publishers and edtech companies for 30 years

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What We Do

Full-Spectrum K–12 Support

Content & Curriculum

  • End-to-end program development
  • Scope & sequence design
  • Common Core, NGSS, WIDA, and state alignment
  • Lesson planning and formative assessments

Instructional Design

  • Pedagogically-grounded content
  • Interactive digital learning experiences
  • UDL-aligned accessibility standards
  • Course development templates

Editorial & QA

  • Content development oversight
  • Editorial review & fact-checking
  • Program blueprinting
  • Workflow management

Creative & Media

  • Animations and interactive simulations
  • Educational video production
  • Technical illustration
  • eBook and digital content transformation

Technology & Platform

  • LMS integration (Canvas, Blackboard, Moodle)
  • Web, app, and UI/UX design
  • Accessible digital experiences

Why Six Red Marbles

Built for the Real Work of K–12

30

Years of Expertise

Trusted by top publishers and edtech companies to develop engaging instructional materials that hold up in real classrooms.

1,000s

Learning Experiences Built

We've created thousands of K–12 resources aligned to national and state standards—at scale and without sacrificing quality.

PreK–12

Full Grade-Band Coverage

Whether it's a single unit or an entire multi-grade program, our teams know how to calibrate content for every learner.

100%

Commitment to Quality

Every deliverable meets the highest standards of academic rigor, engagement, and accessibility—no exceptions.

Ready to Build Something Extraordinary?

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