Thinking Summary · 1
MasteredEquation Logic: .
[Discovery] You have 8 units of hr. How many hr is that?
1
Active StepWelcome to "Dough Length 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 8 units of hr. How many hr is that?" You'll reason about the numbers 8, 1, 60 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: 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. If you get stuck on "Dough Length 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 8 units of hr. How many hr is that?
1
Active StepEverything you need to know about the Socratic experience.
You have 8 units of hr. How many hr is that? Hint: The starting amount is 8 hr.
Which is longer: 1 hr or 1 min? If you get stuck, the adaptive hint is: hr > min.
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.
Going the wrong way (dividing when you should multiply). Bigger unit → smaller unit = multiply (more pieces). Smaller → bigger = divide (fewer pieces).
Conversions (Grade 5 extends to cross-system (e.g., km ↔ miles).). Open /grade-4/conversions to start that topic's missions.
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.
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.