# Ontario Grade 5 Science and Technology — 9 November 2026

This dependent proposal reviews **53 retained codes: 42 specific and 11 overall**.
It builds on the unmerged Grade 4 proposal at `9b8c0cf015bf5cb43e8089b8241edce3b14800e7`, preserving its prior
Grade 1–3 components. Exact dependency and code dispositions are in the
[code-by-code mapping](ontario-grade5-science-mapping-2026-11-09.json).
The branch is not described as accepted main or deployed content.

## Outcome

| Scope | Full semantic support | Partial | New topics proposed |
| --- | ---: | ---: | ---: |
| 42 specific expectations | 14 | 28 | 0 |
| 11 overall expectations | 0 | 11 | 0 |

The proposal adds **92 distinct pairs across 39 specific codes and 62 existing
topics**, in 62 new Canada/Ontario **10–11** contexts. Prior intervals and links
are preserved. No global start age is lowered. No topic identity, authored claim,
assessment, dependency or research meaning changes.

Full is an authoring source-fit judgment, not learner mastery, delivered teaching
or consumer eligibility. Partial conditions and candidate-only records do not
request new topics. An overall expectation is reviewed independently rather than
certified from counts of child links.

## Official source and review

The [official Grade 5 expectations PDF](https://assets-us-01.kc-usercontent.com/fbd574c4-da36-0066-a0c5-849ffb2de96e/9dc43e17-b269-4a9a-a6a8-eec790df1585/SciTech_G5_AODA.pdf)
was retrieved 9 November 2026, SHA-256
`c50d8733125607c8d6864a258d87829d09a00916e0f96a80a2957eaef2375459`.
All four pages were read. The
[full 2022 curriculum](https://assets-us-01.kc-usercontent.com/fbd574c4-da36-0066-a0c5-849ffb2de96e/36038265-bd6d-4991-882b-52b4b06c32d0/The%20Ontario%20Curriculum%20Grades%201%E2%80%938%20%E2%80%93%20Science%20and%20Technology%202022_2.pdf),
SHA-256 `1ade9235dcacf15c27dcc92328d1f883c3026c1687bf40368448b39ec6e4bd74`,
provides process context on printed pages 69–80 and Grade 5 on 135–145. All
42 specific paragraphs independently match the two official sources after
excluding only the publisher copyright footer from extracted text.

Semantic searches span all subjects/domains, checking descriptions, evidence,
assessments and prerequisites. Public artifacts contain source keys and our
judgments, without expectation wording or source PDFs.

## Reuse and source-fit boundaries

- **Investigation operations:** existing independent variable control, repeat
  measurement, evidence use, prototype diagnosis and risk planning add real
  contributions. They are available skills, not an invented compulsory checklist.
  Appropriate protective equipment and actual safe performance remain explicit.
- **Coding:** existing variables store and update values, while input/branching
  and first-program claims process and execute them. Varied science-purpose
  storage/processing still needs an applied task; a game score alone is not the
  complete curriculum performance.
- **Health across subjects:** food selection/preparation and interpreted health
  messages support decisions. The digital-impact claim explicitly considers
  wellbeing. Complete social/environmental comparisons and supported mental-health
  connections remain Partial; a nutrient list does not prove them.
- **Body systems:** current vocabulary, digestive, circulation, breathing and brain
  claims supply varied organ functions. An existing inter-system claim directly
  links lungs, blood, heart, cells and waste return. Lifestyle evidence already
  connects several conditions/harms with affected body sites; no separate disease
  list or unlisted compulsory system checklist is invented.
- **Matter:** the state-properties claim tests more than names; physical change
  support combines no-new-material/recovery reasoning with deformation. Existing
  new-material evidence includes chemical signs. Observable bubbles or reversibility
  alone are not treated as an infallible physical/chemical classification rule.
- **Definition and thermal direction:** a particle model or a mass measurement is
  not automatically the complete matter definition. Heating/particle explanations
  contribute, while the complete absorption/release account remains explicit.
  These findings do not authorize new definition or freezing topics.
- **Structures:** existing force diagrams, contact/distance interactions and
  deformation are actual components. They do not by themselves certify internal
  structural-force reasoning or every external structural application. Weather
  and earthquake engineering supply real protective designs without a new hazard
  progression.
- **Energy:** existing forms, stored-potential examples, device conversions, natural
  resource classification and fossil-fuel warming are reused. Conservation and
  dissipation have complete later claims; those claims retain their current ages.
  Transfer labels alone do not demonstrate the full law or dispersal account.
- **Community knowledge:** verified conservation cases exist generally. They do
  not establish the named Indigenous community knowledges or ways of knowing.
  Appropriate community-authoritative resources remain necessary; Australian
  Country evidence is not relabelled.

## Proposed source-fit tasks

These describe proposed review checks, not learner observations or edits to
canonical assessment prompts.

| Codes | Positive case | Near miss to reject | Transfer check |
| --- | --- | --- | --- |
| B2.3 | Explain the lung/blood/heart pathway and exercise-related rate changes. | Say only that the heart beats faster without relating systems. | Explain a stated change in oxygen need using the same linked pathway. |
| C2.5 | Explain a checked new-material case using interpreted observations. | Every bubble or irreversible shape change is called a chemical reaction. | Compare another stated case using substance identity, not one superficial sign. |
| D2.3 | Relate a protective building feature to a specified natural force. | Name a hazard or a sturdy material without explaining the design. | Evaluate another suitable feature against the same hazard. |
| E2.3 | Identify stored potential energy and trace its conversion in a device. | List forms without an actual stored-to-output relationship. | Apply the relationship to a different suitable storage example. |
| E2.6 | Link fossil-fuel use, added carbon dioxide and increased warming. | Confuse greenhouse warming with the ozone-hole mechanism. | Apply the causal account to another stated fossil-fuel use. |

## Code-by-code overview

`C` denotes a direct component and `W` whole-expectation support. Detailed
conditions, candidates and prerequisites are in the JSON. Blank holders are
reviewed conditions, not new-topic requests.

| Code | Semantic judgment | Direct topic IDs and roles |
| --- | --- | --- |
| A1 | Partial | Child reviews |
| A1.1 | Partial | `mt_XirhnAB6Ye` (C); `mt_4A4RpX-Go9` (C); `mt_vJO5Bxk4z-` (C); `mt_7VrR1GzhrN` (C) |
| A1.2 | Partial | `mt_XirhnAB6Ye` (C); `mt_MRQcEvyPJv` (C); `mt_Wa44s-f8Ws` (C); `mt_ZFwPZaDJ0_` (C); `mt_7VrR1GzhrN` (C); `mt_ArVBEpMAPk` (C); `mt_Psun-u_lPf` (C); `mt_CVywzrjT_c` (C) |
| A1.3 | Partial | `mt_hi8cVycbwn` (C); `mt_FtCLISvSGw` (C); `mt_RlILL2sccX` (C); `mt_nNYo5A-7Bl` (C); `mt_eoPcc4nrBE` (C) |
| A1.4 | Partial | `mt_TTH2ouwyTW` (C); `mt_FtCLISvSGw` (C); `mt_v5pOal_23d` (C) |
| A1.5 | Partial | `mt_7VrR1GzhrN` (C); `mt_o8ciHks8t2` (C); `mt_NP101Zl-4g` (C) |
| A2 | Partial | Child reviews |
| A2.1 | Partial | `mt_sPV503BQnI` (C); `mt_YZOjP8KHsM` (C); `mt_nfGAtwqSvP` (C) |
| A2.2 | Partial | `mt_AzTrT5ySCx` (C); `mt_MXxVMCr7_4` (C) |
| A3 | Partial | Child reviews |
| A3.1 | Full | `mt_Q2Zj3L8u9C` (C); `mt_rTn43s8RNX` (C) |
| A3.2 | Partial | `mt_RlILL2sccX` (C); `mt_4A4RpX-Go9` (C) |
| A3.3 | Partial | — |
| B1 | Partial | Child reviews |
| B1.1 | Partial | `mt_4k3HGahK2k` (C); `mt_OTrQJVRRJ6` (C); `mt_Jd2aWEUJ9G` (C) |
| B1.2 | Partial | `mt_MXxVMCr7_4` (C) |
| B1.3 | Partial | `mt_QhLAeAlHI0` (C); `mt_NbkUKcOlEX` (C); `mt_OTrQJVRRJ6` (C) |
| B2 | Partial | Child reviews |
| B2.1 | Full | `mt_K8DJzqbksM` (C); `mt_Ruk2-lyGPZ` (C); `mt_BX4D8cCFtQ` (C) |
| B2.2 | Full | `mt_Ruk2-lyGPZ` (C); `mt_BX4D8cCFtQ` (C); `mt_tiPyEkm4cU` (C); `mt_pJ5zsocdNx` (C) |
| B2.3 | Full | `mt_QK-ZZb7UUN` (W) |
| B2.4 | Full | `mt_4k3HGahK2k` (W) |
| C1 | Partial | Child reviews |
| C1.1 | Partial | `mt_VIUF5Vspbg` (C); `mt_NbkUKcOlEX` (C); `mt_VI5kdtf28e` (C) |
| C1.2 | Partial | `mt_VI5kdtf28e` (C); `mt_deexfCHU9m` (C); `mt_cOJhDeLkPo` (C) |
| C2 | Partial | Child reviews |
| C2.1 | Partial | — |
| C2.2 | Full | `mt_YQkUdIHO8L` (W) |
| C2.3 | Full | `mt_Pl-nsjYGZ3` (C); `mt_ahSqW_kK1b` (C) |
| C2.4 | Full | `mt_UKmtuAsSLN` (C); `mt_wf-SJhZ1kC` (C) |
| C2.5 | Full | `mt_rbPioPELM1` (W) |
| C2.6 | Partial | `mt_Pl-nsjYGZ3` (C); `mt_ylruY6VhOf` (C) |
| C2.7 | Partial | `mt_Ge4Wtg6QMM` (C); `mt_e3-_toGuWf` (C); `mt_YQkUdIHO8L` (C) |
| D1 | Partial | Child reviews |
| D1.1 | Partial | `mt_NVr4AhsvIq` (C); `mt_iiUdDUEEGY` (C); `mt_wf-SJhZ1kC` (C) |
| D1.2 | Partial | `mt_iiUdDUEEGY` (C); `mt_yDZbQODIwp` (C) |
| D2 | Partial | Child reviews |
| D2.1 | Partial | `mt_wf-SJhZ1kC` (C) |
| D2.2 | Partial | `mt_k7GOtslF-x` (C); `mt_lcf8lx-LkZ` (C); `mt_wf-SJhZ1kC` (C) |
| D2.3 | Full | `mt_iiUdDUEEGY` (C); `mt_yDZbQODIwp` (C) |
| D2.4 | Partial | `mt_Wx5m6mwkpj` (C); `mt_8VA40Tumth` (C) |
| D2.5 | Partial | `mt_Q2Zj3L8u9C` (C) |
| E1 | Partial | Child reviews |
| E1.1 | Partial | `mt_VI5kdtf28e` (C); `mt_DbI1kNg_0R` (C); `mt_7e-lG7YOWa` (C) |
| E1.2 | Partial | `mt_MXxVMCr7_4` (C); `mt_cOJhDeLkPo` (C) |
| E1.3 | Partial | — |
| E2 | Partial | Child reviews |
| E2.1 | Full | `mt_akBotspaf2` (W) |
| E2.2 | Partial | `mt_akBotspaf2` (C); `mt_X_aDUBh-HF` (C) |
| E2.3 | Full | `mt_akBotspaf2` (C); `mt_K1-HopEJAB` (C) |
| E2.4 | Partial | `mt_X_aDUBh-HF` (C) |
| E2.5 | Full | `mt_VI5kdtf28e` (W) |
| E2.6 | Full | `mt_DbI1kNg_0R` (W) |

## Remaining conditions and validation

Social/environmental health judgments, supported food/mental-health links,
manufacturing impacts, the matter definition, thermal release, useful gas/liquid
applications, internal structural forces, complete structural/equipment cases,
energy consumption comparisons, conservation/dissipation and verified community
knowledges retain explicit conditions. Real components remain visible throughout.

The diagnostic finds **63 distinct hard-prerequisite IDs** without an
explicit Ontario interval spanning 10–11. This is not a consumer selection rule;
global/framework guidance and consumer behavior need separate review. Missing
Ontario prerequisite intervals do not erase semantic support. No fabricated
source link, age-only record or dependency change clears the diagnostic.

Public validation and generated-artifact checks pass. Exact preservation checks
retain Grade 1–4 reports and all existing contexts, authored fields, catalogue,
dependencies, clusters and archived research. Only the new associations and their
bounded compatibility artifacts/research binding change. All source paragraph,
public text-screen and relative-link checks pass.

This is a dependent repository proposal, with no DB or learner writes or
publication receipt. Reconcile its unmerged base before downstream handoff. This
review does not declare Ontario Science alignment complete.