Inquiry AI

Free · K-6 · CCSS-aligned

Common Core Review Games
for Grades K through 6

2340 free, browser-based review games covering 78 Common Core topics. Each game pairs with a printable PDF study guide so kids can review on-screen and on paper.

🎮 Browse Games by Grade 🖨️ Printable Mystery Games
1st Grade · 360 games 2nd Grade · 420 games 3rd Grade · 450 games 4th Grade · 390 games 5th Grade · 360 games 6th Grade · 360 games

1st Grade Review Games

12 CCSS topics · 360 interactive games · printable PDF guides

📖 1st Grade Handbook

2nd Grade Review Games

14 CCSS topics · 420 interactive games · printable PDF guides

📖 2nd Grade Handbook

3rd Grade Review Games

15 CCSS topics · 450 interactive games · printable PDF guides

📖 3rd Grade Handbook

4th Grade Review Games

13 CCSS topics · 390 interactive games · printable PDF guides

📖 4th Grade Handbook

5th Grade Review Games

12 CCSS topics · 360 interactive games · printable PDF guides

📖 5th Grade Handbook

6th Grade Review Games

12 CCSS topics · 360 interactive games · printable PDF guides

📖 6th Grade Handbook

Common Core Review Games — FAQ

What these games cover, how they're aligned, and how to pair them with printable practice.

Are these Common Core review games really free?

Yes — every review game on this page is free, ad-free, and works in any modern browser. No login required. We never run a runtime LLM, so the experience is instant and offline-friendly.

How are the games aligned to Common Core?

Each game (we call them "missions" inside the app) maps to a specific Common Core State Standard (CCSS) code, visible in the linked study guide. The five-step Discovery → Abstraction → Reflect flow follows the Concrete-Pictorial-Abstract progression CCSS recommends for K-6.

Can I print PDF worksheets to go with the review games?

Yes. Open any grade handbook and use your browser's "Print → Save as PDF" on a topic guide to generate a free printable practice worksheet that pairs with the on-screen review game.

What grades are covered?

Grades K through 6. Each grade has a dedicated review-game cluster aligned to its Common Core domains — number sense for K-2, multiplicative thinking for 3, fractions for 4, decimal operations for 5, and ratios/expressions for 6.

Is Inquiry AI Common Core aligned?

Yes. Every mission, handbook page, and topic hub is mapped to a specific CCSS code (visible in the page header). The curriculum follows the CCSS coherence map: Grade 1 number sense → Grade 3 multiplicative thinking → Grade 6 ratio reasoning, with each grade building strictly on the prior year's foundations.

What is inquiry-based learning, and how does Inquiry AI apply it?

Inquiry-based learning starts with a question, not a formula — students explore, hypothesize, and verify before being told the rule. In Inquiry AI, every mission opens with a "Discovery" step (manipulate the model), then "Abstraction" (write the equation), then "Reflect" (apply to a new case). The procedure is never given upfront; learners derive it from their own observations.

How is Guided Discovery Learning different from "just letting kids figure it out"?

Pure discovery is inefficient — kids hit a wall and quit. Guided Discovery scaffolds the path: a careful sequence of questions, models, and adaptive hints leads the learner toward the insight without revealing it. Inquiry AI's hint system fires automatically after ~15s of hesitation or on the first mistake, escalating from a Socratic nudge to a worked example only when needed. Mistakes are diagnosed via "misconception keys" so the hint matches the actual wrong-thinking pattern.

What does it mean for a math platform to be "Socratic"?

Socratic teaching answers a question with a better question. Instead of "the answer is 12", the system asks "if you had 3 groups of 4, how could you skip-count?" The goal is to externalize the learner's reasoning so they hear themselves think. Every Inquiry AI hint follows this pattern: nudge → reframe → analogy → only then a worked example, in that order.

What is the Concrete-Pictorial-Abstract (C-P-A) approach?

C-P-A is the Singapore Math sequence proven to deepen number sense: first manipulate physical objects (Concrete), then draw pictures of them (Pictorial), and only then write equations (Abstract). Inquiry AI structures every mission as exactly these three steps — a manipulative, a picture/grid model, and finally the equation. Skipping straight to symbols is the #1 cause of math anxiety; the platform refuses to do it.

Why does Inquiry AI let kids "struggle" before showing the answer?

Research on "productive struggle" shows that 20–60 seconds of focused effort BEFORE help dramatically improves long-term retention — the brain encodes the strategy more deeply. Inquiry AI's hint timing is calibrated to this window: short enough to prevent frustration, long enough to lock in the learning. Parents can adjust the threshold in settings if a learner needs faster scaffolding.