Thinking Summary · 1
MasteredEquation Logic: .
[Discovery] You have 3 units of hr. How many hr is that?
1
Active StepWelcome to "Cargo Mass Converter", a 4th Grade Unitconversion mission at the Seedling (entry-level) level, staged in our space exploration scenario. The mission opens with a hands-on prompt: "You have 3 units of hr. How many hr is that?" You'll reason about the numbers 3, 1, 60 across 3 guided steps.
Behind the space exploration 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: Going the wrong way (dividing when you should multiply). Bigger unit → smaller unit = multiply (more pieces). Smaller → bigger = divide (fewer pieces). If you get stuck on "Cargo Mass 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
0/3
Thinking Summary · 1
MasteredEquation Logic: .
[Discovery] You have 3 units of hr. How many hr is that?
1
Active StepEverything you need to know about the Socratic experience.
You have 3 units of hr. How many hr is that? Hint: The starting amount is 3 hr.
Which is longer: 1 hr or 1 min? If you get stuck, the adaptive hint is: hr > min.
Seedling missions anchor the visual model with small, friendly numbers — ideal as the first attempt at this topic. Within 4th Grade Unitconversion, expect numbers in the corresponding range.
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.
Multidigitmult (Conversions exercise multi-digit multiplication and division.). Open /grade-4/multidigitmult 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.
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.