Company
Ck 12
Sample prompts where it appears
What are the best middle school test prep sites for gentle, step-by-step practice before classroom benchmarks?
Brands:Ixl,Khan Academy,Ck 12,Commonlit,Readtheory
What are the best free elementary learning assessment providers for gentle, school-aligned practice and skill checks?
Brands:Khan Academy Kids,Khan Academy,Ixl,Ck 12,Great Minds
What are the best free digital test prep resources for middle school students preparing for state assessments?
Brands:Khan Academy,Ck 12,Ixl,Commonlit,Readworks
What are the best free digital activity libraries for engaging classroom activities on student devices?
Brands:Nearpod,Pear Deck,Common Sense Education,
Kahoot,Quizizz
What's the most trusted quiz and practice content sites for homeschool parents building daily practice in core subjects?
Brands:Khan Academy,Ixl,Education,Ck 12,Quizlet
Are there any digital curriculum platforms that work offline on tablets for K-12 classrooms?
Brands:Google Classroom,Canvas,Schoology,
Khan Academy,Khan Academy Kids
What are the best free high school supplement course publishers for extra practice in core subjects?
Brands:Ck 12,Khan Academy,Openstax,
Google,School Yourself
Can you recommend academic subject tutoring sites for reviewing difficult math and science topics?
Brands:Khan Academy,Chegg Study,Wyzant,Varsity Tutors,Tutor
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How did Obsurfable measure this?
Obsurfable records AI answers to buyer-style prompts in its research corpus (13 observations for this page). Metrics are distributions over observations, not a single static ranking.
Which AI systems does Obsurfable collect answers from?
OpenAI, ChatGPT, Google, Gemini, Google AI Mode, Anthropic, Claude, Perplexity, Grok, DeepSeek, Mistral, Copilot, and Meta AI.