All people, organisations, offers, messages and numbers on this page are invented classroom models. Dollar amounts are fictional Australian dollar values. The public line and desk note are separate constructed texts, not competing real testimonies. No one should spend money, disclose a household budget or treat a model as an employment, tax or investment offer. Read aloud, enlarge, transcribe to Braille or place each numbered fact on a tactile card as needed; record that support. The learner's job is to identify who says what to whom, calculate within the stated units, and publish only a conclusion the model can support. The public checks use different cases.
Day 11 · Planetarium cards · visual exhibit
Public notice, by fictional Orbit Hall editor to visitors: “Choose our 50-card constellation set. It is the cheapest way to build any night-sky wall. Big ideas deserve the big bundle.” The word any makes a promise beyond one order size.
Desk note, invented prices before any delivery charge: Set S contains 25 cards for $20. Set L contains 50 cards for $35. Sets cannot be split at purchase. A paper exhibition needs 40 cards; a small trial needs 20. Every card in this model is identical. Delivery is unknown, not $0.
Inquiry: Find each per-card price and the lowest stated whole-set outlay for 20 and 40 cards. What can the editor truthfully say to each audience? Optional whole-set calculator; paper route.
Day 12 · Archive guide pay line · adult work model
Public recruitment draft, by fictional museum editor to adult applicants: “A steady $1,120 in your pocket every week. Join the label archive team.” The phrase in your pocket suggests take-home money.
Desk note: This invented gross annual salary is $58,240. For this exercise divide by 52 weeks. No tax, deductions, allowance, work-hours or eligibility information is supplied. This is not a pay entitlement statement or legal wage example.
Inquiry: Compute gross weekly model pay, distinguish it from take-home pay, and rewrite the invitation with the missing boundary.
Day 13 · Route-clue cards · recreation kit
Public handout, by fictional Trail Table organiser to club members: “No setup fee? That must cost less, whatever the number of clue cards.” The question mark invites readers to accept a shortcut.
Desk note: Plan A has a $12 fixed setup charge plus $0.40 per card. Plan B has no setup charge and $0.65 per card. Compare 40 cards and 60 cards. These are printing-only model costs; postage and card quality are unknown.
Inquiry: Write both total-cost rules, compare each specified quantity and produce a conditional recommendation rather than an “always” claim.
Day 14 · Mini-garden workshop · event budget
Public invitation, by fictional workshop committee to participants: “Our whole $380 pool is ready for your new project ideas. Tell us what to buy.” The word whole makes already committed money sound available.
Desk note: Fictional pool $380. Fixed commitments: room $140, table hire $90. Proposed optional paper-and-pencil materials $80. These are model categories, not quotes or a real community budget. No other costs are supplied.
Inquiry: Separate fixed from discretionary amounts, calculate the remaining uncommitted balance before and after the proposal, and edit the invitation so participation is real without promising unavailable funds.
Day 15 · Science-exhibit reserve · simple-interest model
Public message, by fictional exhibition treasurer to committee: “The $1,200 paper-equipment reserve earns 3% every month. After two years it will grow fast enough for any upgrade.” The time unit and “any” both outrun the note.
Desk note: Classroom-only simple interest: principal $1,200, rate 3% per year, time 2 years. Use interest = principal × annual decimal rate × years; add interest to principal for the model ending balance. No fees, compounding, price inflation or real product are modelled.
Inquiry: Calculate interest and ending balance, name the wrong time unit in the public line, and replace the prediction with a bounded numerical claim. The separate Check A uses a fresh source after this lesson.
Day 16 · Recipe-card archive · discounted printing
Public comparison, by fictional club editor to members: “The $99 printer is clearly the cheapest. Why pay the other shop's $120?” The comparison selects one visible sticker price.
Desk note: Option A has a sticker price $120, a 15% discount on that price, and no listed setup charge. Option B has a sticker price $99 and a mandatory $8 setup charge. Delivery and print quality are unknown for both; do not treat unknown as free or equal.
Inquiry: Calculate the two stated totals, show the discount base, and revise clearly to account for both the known result and unknown terms.
Day 17 · Costume-sleeve packing · adult work model
Public recruitment card, by fictional theatre storekeeper to adult helpers: “Paid by the piece is the better way to earn for a four-hour shift. More work, more reward.” This is a constructed comparison, not a real job ad.
Desk note: Model H pays $24 per hour for 4 hours = stated gross pay. Model P pays $11 per accepted sleeve, with 8 accepted sleeves in the stated shift. Rejected work, minimum employment entitlements, tax and other conditions are not modelled. Do not use the card to advise on actual employment.
Inquiry: Compare stated gross pay for this one shift, identify the condition that determines piecework pay, and write a safe one-shift comparison instead of better without scope.
Day 18 · Sports-scoreboard parts · fully taxable GST model
Public price card, by fictional parts catalogue to a coach: “$75 is your final total for Option A. Our small print is simple.” The word final matters.
Desk note: In this teaching scenario both listed parts are assumed fully taxable under Australian GST, with no delivery or discount. Option A is $75 GST-exclusive. Option B is $86 GST-inclusive. The ATO rule supports using 10% of a fully taxable GST-exclusive value (equivalently 1/11 of its GST-inclusive price). This card does not classify any real product or issue tax advice.
Inquiry: Add GST to A, compare final listed totals, and rewrite the catalogue sentence with the fully-taxable assumption and missing delivery boundary.
Day 19 · Podcast paper-planning fund · repeatable budget
Public planning line, by fictional podcast-club convenor to members: “We can repeat this plan forever with $35 left each week. No other question is needed.” The word forever erases changing costs.
Desk note: One invented week has a $210 allocation, $120 fixed room and equipment charges and $55 discretionary paper planning materials. For a four-week what-if, suppose these three amounts remain exactly the same each week. No fifth week, prices, tax or actual club funding is evidenced.
Inquiry: Calculate the one-week balance and conditional four-week balance. Then draft a source-bound planning line that asks what would need rechecking.
Day 20 · Printmaking poster · sequential percentages
Public sign, by fictional gallery tutor to adult makers: “A 25% markup followed by a 10% discount returns the poster to its $40 making cost. The two percentages cancel.” The verb cancel conceals two different bases.
Desk note: In this constructed model, making cost is $40. First add 25% of $40 to make the marked price. Then discount 10% of that new marked price. There are no other charges or tax. This is a classroom price exercise, not actual retail advice.
Inquiry: Show both bases and the final price; identify the text choice that makes the arithmetic sound simpler than it is. Create a two-sentence correction for a reader. The separate Check B uses a fresh source after this lesson.
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