# Teacher plan · Day 67 About 35–45 minutes, or several shorter visits. This is an unpiloted planning suggestion, not a QCAA condition or a required dose. ## Prepare and access Prepare scrap paper, suitable large counters and labels. Prices/fees/offers and transport capacities are fictional. Device use is optional. Hide models before individual work. - Keep the mathematical purpose when changing mode. Do not assume a diagnosis predicts a preferred way to learn. - Offer a quiet place, one instruction at a time, a preview of the steps, a pause card and a visible finish point. No countdown, flashing rewards or forced sound. - Provide large text, high contrast, plain borders and a complete text alternative to each visual. Colour must never carry the only meaning. - For motor access, use a selection-and-destination control rather than drag-only interaction, large physical pieces or an adult moving pieces as directed. - For language access, explain group, each, total, left, fee, estimate and budget using the current story. Home-language explanations and bilingual notes are welcome; mathematical reasoning is assessed separately from spelling or English fluency. - Reduce a number range or show part of a model when appropriate, then record the change. These supports do not certify the original task independently completed. - No translation is represented as verified without a fluent reviewer and a recorded version. No invented First Nations language words, stories or cultural designs; seek the appropriate community’s permission and language guidance before a local cultural adaptation. ## Complete day sequence ## Day67 · An estimate is a check, not a receipt **Purpose:** Choose and explain rounding or bounds, then recognise when an exact calculation is needed near a budget limit. **Materials:** scrap paper,labelled groups,suitable large counters; plain fictional price/fee cards when relevant. No bought kit,device or printer required. ### Demonstration · D67 Six pretend kits cost $19 each, plus one $7 fee. A supplied budget is $120. Before the exact calculation, round each $19 price up to $20 and the $7 fee up to $10. Explain why the resulting $130 is an upper estimate. It exceeds $120, but an upper estimate alone cannot prove that the actual total exceeds $120. Now use 6 × 20 − 6 = 114, then add 7 to get 121. This exact result does establish an overrun of $1. Invite the learner to describe the direction of rounding. A different sensible estimate is acceptable when its role and limitations are explained. **Model:** 6 × $19 + $7 = $121. The exact cost is $121, so it exceeds the $120 budget by $1. Rounding to 6 × $20 + $10 = $130 is a rough upper check, not the actual price. **Transfer probe:** Four $18 kits plus a $7 fee cost $79. The upper rounded estimate $90 exceeds an $80 budget, yet the exact price fits. This counterexample prevents treating every upper estimate as a purchase decision. **Watch for:** Calling an estimate the actual total; inferring 'cannot afford' solely from an upper estimate over budget; rounding a one-off fee once per kit. ### Three complete learner briefs **A:** Four pretend kits cost $18 each, plus one $7 fee. The budget is $80. Teacher example: 4 × $18 + $7 = $79; $1 left. Provided estimate $90 is a check, not the paid cost. **B:** Six pretend sets cost $17 each, plus one $9 fee. The budget is $110. Teacher example: 6 × $17 + $9 = $111; $1 over. Provided estimate $130 is a check, not the paid cost. **C:** Eight pretend packs cost $23 each, plus one $12 fee. The budget is $200. Explain why rounding down to $170 is not enough to decide. Teacher example: 8 × $23 + $12 = $196; $4 left. Provided estimate $170 is a check, not the paid cost. ### Own, check and next Use W07's four empty spaces and a complete selected brief. Ask for known/unknown quantities, model, sentence/strategy, check and useful message. Use C13/C14 individually and record actual support; copied work is not independent evidence. If needed choose the corresponding V01–V08target/fullN01–N32fresh mini-lesson. H07/X07 are optional new settings, not compulsory extra workload. ## Complete class routine - Connect: 3–5 minutes. Read the purpose. Ask what the numbers count and which amount is missing. Permit quiet thinking before replies. - Model: 7–10 minutes. Use the day’s exact demonstration. Point to every term in the representation. Show the worked answer as a teacher example, then remove it before individual work. - Try: 10–15 minutes. Learner chooses A, B or C after the teacher checks number demand. Make, draw, explain, sign, point or type; adults may scribe exactly what is dictated. Ask for the contextual unit and one check. - Compare: 5–8 minutes. Share two strategies with consent. A learner may use an anonymous sample or work privately. Discuss the supplied work, not the person. - Exit: 3–5 minutes. Use a C item individually. Record mathematical reasoning and the support given. Revisit the matching next-teaching target when needed. ## Give the material [Learner day](../learner/day-67.html) · [Full worksheet/three briefs](../worksheets/W07.html) · [Supplied teacher model](../assets/aids/V13.svg) · [Full model alternative](../assets/aids/V13.alt.html) · [Complete written read-aloud](../narration/day-67.html) [First neutral exit](../ordinary/C13.html) · [Second neutral exit](../ordinary/C14.html) · [First staff exit](exits/C13.html) · [Second staff exit](exits/C14.html) ## Full worksheet staff note Use the complete Day67 plan and C13/C14 exit. Record route and supports. Accept clear equivalent models; drawing neatness and spelling are not maths criteria.