Courses / Mathematics / Quantitative reasoning and numerical sense / Project Build and defend your work Produce an auditable quantitative estimate Prepare a fictional school-event or workplace-material estimate. Scale a reference quantity, convert measurements consistently, calculate whole-unit purchases and distinguish a rough estimate from a precise-looking model result.
Choose an audience, investigate alternatives, copy evidence from your experiments, and produce an artifact. You can open this project at any time. Reports, numerical transfer checks and human review are separate outcomes.
Your project workspace Choose the kind of work you want to produce School investigation College investigation Workplace application Plan materials for an invented class event. Show a reference ratio, target quantity, unit conversions and a reserve; compare two feasible options.
1. Collect and compare evidence Required experiment sources:
Include every source above and at least one pair with different inputs from the same experiment. Explain confounding changes yourself; the presence check does not judge your interpretation.
Open an experiment and change an input or capture a trial to make evidence available here.
2. Write and revise your report Question, quantities and units State the decision and define every input with units and a source or explicit synthetic assumption.
Ratios and conversions Show the reference whole, scaling fraction and intermediate unit conversions. Explain why an area conversion needs two factors.
Estimate and rounding audit Compare rough and detailed calculations. Explain significant digits, purchase rounding and which uncertainty remains unmodeled.
Feasible alternatives Use at least two captured configurations and state which satisfy the budget or coverage constraint.
Recommendation and limits Choose an option with a reason, state omitted conditions and explain what measurement could change it.
Your artifact: code, analysis, prototype or decision brief This field stores up to 12,000 characters of inert text. Code runs only through the explicit bounded editor in the relevant lessons; project attachments never execute.
Load a text artifact Review your work against the rubric Each percentage and fraction names its reference whole. Units remain consistent throughout; squared units convert correctly. Rounding for display is distinguished from rounding for indivisible purchases and from measurement error. The recommended option satisfies stated constraints and includes an auditable comparison. The conclusion distinguishes original synthetic assumptions from observed facts. 11 evidence requirements remain Capture evidence from Scale a fraction without losing the whole. Capture evidence from Convert units before buying materials. Capture evidence from Keep scale and precision separate. Capture evidence from Allocate a constrained budget. Include two different input configurations from the same experiment to compare. Write your question, quantities and units. Write your ratios and conversions. Write your estimate and rounding audit. Write your feasible alternatives. Write your recommendation and limits. Add your project artifact: code, analysis, prototype or decision brief. Record my report Download report and evidence Editing the report or evidence returns it to draft. Recording verifies field presence and input comparisons, not correctness of your reasoning or code.
3. Check transfer to unfamiliar cases These authored cases use different numbers or conditions from the lesson practice. They are public local checks, not secure certification. Each case permits three submissions. Opening, first responses and attempt counts survive imports; no reset creates fresh evidence.
Case qr-fraction Open case qr-fraction Case qr-area Open case qr-area Case qr-purchase Open case qr-purchase Case qr-scientific Open case qr-scientific
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