The COSMIQ Blog

Articles tagged “pen reviews” · Clear filter

Exam Prep Parenting for Learning Learning Science Study Skills EdTech Productivity
Exam Prep

Best Grading Pens: Red, Green, and Purple Picks Teachers Love

A practical roundup of widely available pens that work well for grading—covering gel, felt-tip, and fineliner options in red, green, and purple, plus buying tips for durability, bleed, and comfort.

By Dr. Matthew Lynch · July 14, 2026 · 5 min read

Learn anything, free.

COSMIQ is a free, voice-driven AI tutor for every learner. No credit card, ever.

Start learning free →