Thinking Summary · 1
MasteredEquation Logic: .
[Discovery] You have 15 units of km. How many km is that?
1
Active StepWelcome to "Sugar Gram Converter", a 4th Grade Unitconversion mission at the Explorer (core) level, staged in our bakery scenario. The mission opens with a hands-on prompt: "You have 15 units of km. How many km is that?" You'll reason about the numbers 15, 1, 1000 across 3 guided steps.
Behind the bakery story, this lesson is really about unitconversion aligned to CCSS 4.MD.A.1. Know relative sizes of measurement units within one system; convert from a larger unit to a smaller unit. The key strategy this mission asks you to internalise: Bigger unit → smaller unit means multiply.
A general pattern to watch for in 4th Grade unitconversion — illustrated with example numbers below, which may differ from this lesson's: Confusing 1 m = 100 cm with 1 m = 10 cm. Memorise the table. Better yet, look at a metre stick — count the cm marks: there are 100. If you get stuck on "Sugar Gram Converter", the adaptive Socratic hints below escalate from a gentle nudge to a worked-out strategy — the same way a one-on-one tutor would coach you through it.
Grade 4 · Unitconversion
Mission Progress
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Thinking Summary · 1
MasteredEquation Logic: .
[Discovery] You have 15 units of km. How many km is that?
1
Active StepEverything you need to know about the Socratic experience.
You have 15 units of km. How many km is that? Hint: The starting amount is 15 km.
Which is longer: 1 km or 1 m? If you get stuck, the adaptive hint is: km > m.
Explorer missions hit the core abstraction at typical numeric ranges — this is where conceptual mastery is built. Within 4th Grade Unitconversion, expect numbers in the corresponding range.
Mixing units in the same calculation. Convert everything to ONE unit before adding or comparing. 1 m + 50 cm = 100 cm + 50 cm = 150 cm.
Conversions (Grade 5 extends to cross-system (e.g., km ↔ miles).). Open /grade-4/conversions to start that topic's missions.
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.
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.