SubjectNest resource library

Development draft · local review needed

Day 16 · A budget keeps essentials visibleYear 11 Maths · T1 W3–4 · Day 16 lesson

Prepare this lesson

Year 11 / Mathematics / Term 1 / Weeks 03 04

Part of the full two-week lesson sequence. Check the pack guide and taught point before teaching.

Open for this lesson: Pack guide · Fresh learner checks · Aids and text routes.

Download full sequence

Teacher copy: This page may include teaching prompts or answer keys. Answer keys in this public library can be viewed by anyone. Give learners a clean prompt, use checks as formative evidence, and change a case locally when prior access matters.

Learner choices

Goal: classify Card D's fixed, variable-essential and discretionary costs before finding an unassigned model balance. 25 = 2 + 5 + 6 + 7 + 5.

  1. 0–2: Say Card A's $1,260 gross weekly figure is stipulated as available in this exercise only; a real budget must verify deductions. No private family budget is requested.
  2. 2–7: Model fixed 520+120+40=$680; food is variable essential, not discretionary. Model 680+220+65+45=$1,010 planned.
  3. 7–13: Learners calculate discretionary 65+45=$110, unassigned 1,260−1,010=$250 and reverse check 1,010+250=1,260.
  4. 13–20: Routes: move labelled cost counters on the budget mat; fill subtotal boxes in large print; enter or dictate income − fixed − variable essential − discretionary. All routes preserve food's category and say what a real budget still needs.
  5. 20–25: Exit “Is $250 proven available in a real household?” Key: no; gross/net and unlisted costs remain unknown. Move: if food is called discretionary, ask whether the classification matches the stated essential role before recomputing.

Alternative domain: Imaginary community workshop operating plan. Optional/home: sort a made-up $900 income and three invented costs; no personal money disclosure.

Source: https://neuroforge.io/subjectnest/library/resources/year-11/mathematics/term-1/weeks-03-04/day-16 · Original material © NeuroForgeIO Pty Ltd 2026 · CC BY 4.0: https://creativecommons.org/licenses/by/4.0/ · Credit the source and note changes. External sources keep their own terms.