Inquiry AI

Add and Subtract within 100 Missions

Master core mathematical concepts through our interactive Socratic curriculum.

CCSS 2.NBT.B.5 Aligned
Start Mission View Grade Handbook
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🔥 Challenger Bakery

Bakery Order Tally

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🔥 Challenger Bakery

Cookie Restock Math

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🔥 Challenger Bakery

Pastry Subtract Quest

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🔥 Challenger Bakery

Cookie Restock Math

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🔥 Challenger Bakery

Bakery Order Tally

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🧭 Explorer Bakery

Bakery Order Tally

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🧭 Explorer Bakery

Cookie Restock Math

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📐
🧭 Explorer Bakery

Pastry Subtract Quest

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📐
🧭 Explorer Bakery

Bakery Order Tally

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📐
🧭 Explorer Bakery

Cookie Restock Math

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🌱 Seedling Bakery

Bakery Order Tally

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🌱 Seedling Bakery

Cookie Restock Math

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📐
🌱 Seedling Bakery

Pastry Subtract Quest

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🌱 Seedling Bakery

Bakery Order Tally

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📐
🌱 Seedling Bakery

Cookie Restock Math

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🔥 Challenger Space

Asteroid Subtract Quest

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🔥 Challenger Space

Crew Roster Math

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🔥 Challenger Space

Asteroid Subtract Quest

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🔥 Challenger Space

Cargo Manifest Sum

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📐
🔥 Challenger Space

Crew Roster Math

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🧭 Explorer Space

Asteroid Subtract Quest

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📐
🧭 Explorer Space

Crew Roster Math

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📐
🧭 Explorer Space

Asteroid Subtract Quest

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📐
🧭 Explorer Space

Cargo Manifest Sum

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📐
🧭 Explorer Space

Crew Roster Math

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📐
🌱 Seedling Space

Asteroid Subtract Quest

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📐
🌱 Seedling Space

Crew Roster Math

Start Mission →
📐
🌱 Seedling Space

Asteroid Subtract Quest

Start Mission →
📐
🌱 Seedling Space

Cargo Manifest Sum

Start Mission →
📐
🌱 Seedling Space

Crew Roster Math

Start Mission →

Common Questions

Everything you need to know about the Socratic experience.

How many Add and Subtract within 100 missions are in 2nd Grade?

There are 30 missions in this topic — 10 Seedling (entry-level), 10 Explorer (core), and 10 Challenger (stretch). Each mission has 3 Socratic steps with adaptive hints.

Which CCSS standard does 2nd Grade Add and Subtract within 100 cover?

This topic is aligned with CCSS 2.NBT.B.5. Use the mission sequence below to move from visual models to abstract reasoning.

What's the recommended order for Add and Subtract within 100 missions?

Start with Seedling missions to anchor the visual model, then move to Explorer for the core abstraction, and tackle Challenger only when Explorer is flawless. Difficulty badges on each card show this progression.

How do you teach 'regrouping' socratically?

Instead of 'carrying the one', we ask: 'What happens when the ones house is full? Where do the extra ten ones go?' This helps them discover the logic of the tens place.

Does Grade 2 cover measurement?

Yes! We focus on using rulers and understanding that measuring is just counting standardized units end-to-end.

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.