Teacher-facing answer and… | Year 9 Subjects · T1 W3–4 · Answer And…

This guide and the formative prompts are public. They do not secure an exam or validate a score. If first exposure matters, write a locally new parallel case with the same construct and check its answer in advance. For each response record an exact detail, reasoning, access mode (A neutral support), content prompt (P), independent response (I) or not observed (N), then one next move. A neutral read-aloud is access; it does not establish independent print reading. A paper plan does not establish observed physical or artistic performance. Accept defensible alternatives where criteria are met.

Daily 10–12-minute checks

Area / day	Expected answer or observable evidence	Next move if not yet secure
Science 11	Photosynthesis arrow: atmosphere to plant/biosphere; respiration can return carbon to atmosphere; arrow size gives no rate.	Rebuild arrows with process labels; ask what quantity is absent.
Science 12	Photosynthesis removes atmospheric CO₂ into plant material; respiration and combustion can add CO₂; arrow direction alone is incomplete.	Pair each named process with source/destination, not colour/arrow alone.
Science 13	Ramp height changed; disc, ramp surface and release point held; distance method and repeated observation still needed. No result yet.	Separate prediction, variable, control and observation.
Science 14	12,13,12 cluster; 20 is anomalous in this tiny fictional set. Moved boundary suggests a possible method issue, not proof.	Keep 20 visible and plan a repeat with boundary held fixed.
Science 15	See new-case S-A key below.	Diagnose process arrow and quantitative overclaim separately.
Science 16	Mechanical sound needs a medium; a vacuum gives none. Neighbour-dot model omits real molecular detail and loudness.	Contrast particle local motion with whole-particle travel.
Science 17	Crest strip shows repeating shape; dot strip better suggests neighbouring medium motion. Neither gives speed or a measurement.	Ask which question the chosen representation answers.
Science 18	`2H₂ + O₂ → 2H₂O`: left/right H=4, O=2. Coefficients count whole formula units; subscripts define formulas.	Use whole-molecule cards before symbols.
Science 19	One fictional success lacks method, replication and independent review. Fairer claim: “The paper model worked once under unstated conditions; test again with a recorded method.”	Ask a peer what exactly to repeat and how to record it.
Science 20	See S-B key below.	Separate medium reasoning from atom conservation.
HASS 11	A=12 min; B=7+10=17 min; A 5 min faster in model. Step-free status, cost/frequency and real timetable unknown.	Add a second criterion and provider check.
HASS 12	Route North planned 30, South 22; closure could reduce planned capacity but delivery/reliability and impacts unknown.	Put “planned” before every quantity and name missing criteria.
HASS 13	Both cards written now. A would be primary if authenticated as contemporaneous, but the supplied A is a simulation. Origin/date/context needed.	Ask for archive provenance, not an old-looking typeface.
HASS 14	State yes total 375/600, territories yes30/no70, national yes405/no295 of700. Only A–C have state yes majorities; fails four-state condition.	Count state winners before national total; keep territories only in national test.
HASS 15	See H-A key below.	Audit the two referendum conditions and route unknowns separately.
HASS 16	12/18 = 2/3 of recorded respondents, not everyone or representative residents; invitation/sampling unknown.	Replace absolute headline and ask who could be missing.
HASS 17	Customer, business, finance service and council have distinct roles; part delay may affect timing, but actual price/effect unknown.	Trace who requests, supplies, processes and sets rules.
HASS 18	A=30/15=2 credits per planned use; B=45/30=1.5. Durability and accessibility unmeasured.	Make an explicit criteria matrix before recommending.
HASS 19	Neither caption is real historical evidence. “Poor maintenance caused it” asserts more than simulated note; an authentic ledger could help but may not settle all causes.	Return to provenance and list corroborating records.
HASS 20	See H-B key below.	Separate source authentication from cost/criterion reasoning.
HPE 11	Invitation has at least two meaningful options and asks participants rather than assigns ability labels.	Add a choice and a feedback route.
HPE 12	Specific respectful request; honours “ask first”; offers a supported path if pressure continues.	Replace coercion/assumptions with permission and alternatives.
HPE 13	`guarantees`/`everyone` require evidence; invented advertisement provides none. No new health promise.	Ask source, method, population and outcome measure.
HPE 14	One movement variable changed, actual trial logged if performed; a directed plan is strategy evidence, not own movement performance.	Hold all but one factor constant and mark observed versus planned.
HPE 15	See P-A key below.	Check choice and collaborative rule, not loudness/speed.
HPE 16	Actual safe choice/participation if observed; routine idea is a plan only; no fitness/wellbeing effect inferred from two minutes.	Label observation and longer-term question separately.
HPE 17	Revised rule opens meaningful turns and is agreed with willingness/access considered.	Ask whose opportunity remains restricted.
HPE 18	Request, accepted refusal and waiting/alternative/adult support; no pressure or grabbing.	Practise a two-line non-coercive script.
HPE 19	Check room/access, communicate in more than one format, voluntary role and receipt/feedback check; no assigned feeling.	Turn assumptions about people into options/questions.
HPE 20	See P-B key below.	Restore respect for refusal and future group agreement.
Technologies 11	`h1` heading and `p` paragraph are structure; words are content; CSS colour changes presentation only.	Strip CSS and read semantic tags.
Technologies 12	`AAAAABBCC` → `5A2B2C`: 9→6 characters; `ABCDEF` → `1A1B1C1D1E1F`: 6→12. Decoding needs agreed count-symbol rule.	Trace one pair and count overhead.
Technologies 13	Four outputs `(F,F),(F,T),(T,F),(T,T)` are `RECHECK, RECHECK, RECHECK, READY`; `or` incorrectly accepts `(T,F)`.	Build the counterexample with two cards.
Technologies 14	Slot/item code clearly relevant; home address, birth date and song unsupported by the mock purpose. Identifier need remains a design question; APP 3 applicability is contextual.	Require a purpose for each retained field.
Technologies 15	See T-A key below.	Test reversibility and the false/true edge case.
Technologies 16	Brief names user, one-sheet limit, 30-second model stability and legibility from a stated position; no approval claim.	Turn vague “good” into an observable criterion.
Technologies 17	Neither passes all: A 20<30 seconds; B hides label. Test a change to one factor.	Re-read all criteria, not one impressive score.
Technologies 18	Only actual folded/tested work counts as making/testing; record measured demo and one fold change. Paper demo cannot certify product.	Label predictions before a trial and record what was seen.
Technologies 19	Planned cost `10×2+5=25` credits; planned time `20+10=30` minutes. Label legibility test mitigates a named risk.	Add omitted setup/checking time or risk control.
Technologies 20	See T-B key below.	Ask for all criteria and a safe next test.
Arts 11	Eight-count phrase, deliberate pause/direction/level and intended effect; evidence type labelled as choreography/performance/direction.	Count eight and observe whether performance actually occurred.
Arts 12	One clear timing revision based on specific prompt; performance/presentation only if observed and willingly shared.	Seek one noticed timing detail, not an empty rating.
Arts 13	Fictional goal, obstacle and an enacted/scripted pause/question/focus shift; no real exhibit claim.	Move from plot summary to a playable beat.
Arts 14	Revised line/action reflects changed motive; state exactly what was presented, if anything.	Place old/new lines together and identify audience cue.
Arts 15	See A-A key below.	Ask what framing omits and whether caption is warranted.
Arts 16	Full three-frame sequence makes the empty state temporary; frame 1 crop alone invites a different inference. Artefact ≠ distribution.	Compare first-only with full sequence and revise caption.
Arts 17	Exactly eight boxes, at least two rests, a dynamic mark and reason for silence; sound only if observed.	Count boxes, then restore a purposeful rest.
Arts 18	Two aligned eight-box layers; layer 2 enters at box 5 and texture change explained; presentation only if observed.	Separate entry points or timbres.
Arts 19	Two actual/directed compositions with a line-weight/space change and intended effect; a spoken plan alone is planning.	Make one mark change visible/tactile and compare.
Arts 20	See A-B key below.	Ask for a specific revision and intended audience effect, not assumed viewer reaction.

Day 15 new-case worked keys

Science A

Air CO₂ to pond plant carbon can be labelled photosynthesis (atmosphere to biosphere); plant carbon to air CO₂ can be respiration (biosphere to atmosphere), among possible processes depending on a fuller model. Equal drawn lengths encode no measured daily flux. A fair caption: “The model depicts carbon moving in both directions; no quantities are supplied, so a daily net change is unknown.” A real daily balance would need measured amounts/rates over a defined boundary and interval. Next: if arrows are treated as numbers, add units and a measurement plan on a different example.

HASS A

Route A=16 minutes; B=9+8=17 minutes, so A is one minute quicker in the imagined timetable, but its step-free status and both routes' real frequency/cost are unknown. State yes total 62+58+53+51+48+40=312; territory yes80 makes national yes392. Total votes700, so no308; A–D are four states with yes majorities. The fictional tally satisfies both parts. Territory votes contribute to national total, not the state-majority count. Next: if a learner counts territories as a seventh state, rebuild the six-state grid and national sum separately.

HPE A

Example: “Join by planning turns, keeping score, guiding with speech/AAC/sign or playing; choose what you want to try.” Group can invite preferences, agree a rotation, allow a respectful opt-out and review whether each willing member got a meaningful turn. Do not require the exact wording or infer ability from voice level. Next: if a route is tokenistic, ask the fictional participant whether it is meaningful rather than deciding for them.

Technologies A

BBBBCCCAA has 9 characters; 4B3C2A has 6 and decodes to the original under the stated count-symbol rule. (true,false) → RECHECK; (true,true) → SHOW. With or, (true,false) would incorrectly SHOW. This proves a toy rule, not actual content approval. Next: ask for one false/true counterexample and reverse the encoding.

Arts A

One valid two-panel sequence is empty table then model placed. A fair caption is “The table was empty first; a paper model was then added.” The first frame alone might suggest no display occurred, but that inference is contradicted by the second frame; crop wider/show both frames or use a temporal caption. Any original text/tactile/drawn layout that preserves audience and source status works. No filming or distribution can be inferred. Next: ask how the meaning changes when the second frame is restored.

Day 20 new-case worked keys

Science B

Mechanical sound needs a material medium and would not propagate through a vacuum in this model; electromagnetic light can propagate through a vacuum. The icon does not measure intensity, speed or actual source conditions. For 2Mg + O₂ → 2MgO, both sides have Mg=2 and O=2. Changing MgO to MgO₂ changes the formula represented; changing the coefficient counts whole MgO units. No material was handled. Next: use whole-formula paper cards, then compare the two wave types again.

HASS B

The “1890 receipt” was authored today, so it is a simulation, not genuine primary evidence. A historian would seek archive origin/date/custody and a real ledger or contemporary account. The caption's “overpaid” claim cannot follow from a shipment line even if the receipt were authentic. A=20/10=2 credits per planned use; B=27/18=1.5. B has a lower stipulated planned ratio, but stability and legibility are unknown, so selection needs criteria and tests. Next: separate provenance from interpretation and planned ratio from observed durability.

HPE B

Accept the no: “Okay; I will wait/choose another role/ask the facilitator about next round.” Do not grab or insist. For future rounds, a group could agree a rotation or shared-token rule with accessible options and check who actually participates meaningfully. A refusal to change the current turn is respected; new rules require group agreement. Next: if the answer pressures the holder, rehearse a non-coercive two-line request/refusal.

Technologies B

Neither candidate meets all criteria: X holds only one of two required cards; Y hides one label despite the 30-second hold. A valid revision could widen X's pocket or alter Y's viewing angle, then repeat a one-sheet two-card 30-second desk-position test. Invented test notes and one paper demo do not prove real-world durability/accessibility or safe production. Next: return to the user brief and log actual versus proposed tests.

Arts B

Valid work shows two distinguishable original square/spiral compositions and a named revision, for example thinning the square outline or increasing space around the spiral so the spiral is easier to notice. The learner can say “I intend the viewer to notice the spiral first” and propose asking one willing viewer what they first saw; the fictional feedback is a prompt, not observed user research. A plan alone is not a completed visual work, and no exhibition is claimed. Next: ask the learner to point to the exact before/after mark.