Term / weeks	Teaching focus	Evidence to look for
1–2	Check source relevance and observation method Identify copied or dependent reports	Evidence-origin map
3–4	Find a missing link in a proposal Classify new facts as support, challenge or irrelevant	Argument evaluation grid
5–6	Translate if and only if Build a case refuting a reversed rule	Rule translation and witness
7–8	Distinguish must, could and cannot Use the right kind of proof for each	Case-based explanation
9–10	Review a mixed argument and logic set Recheck one error in a new context	Term learning record
11–12	Test two statements separately Test them together for a unique quantity	Data-sufficiency table
13–14	Fold and label a cube net Infer opposite faces without a physical model	Labelled-net task
15–16	Trace an if–otherwise loop Explain its stopping condition	Branch-and-state trace
17–18	Compare a measurement with an anecdote Design an independent check	Improved evidence plan
19–20	Find a simple counterexample Repair the false claim carefully	Claim, exception and revision
21–22	Distinguish weakening from disproving Compare two competing explanations	Qualified argument judgement
23–24	Separate inclusive and exclusive alternatives Negate an all-claim accurately	Language precision task
25–26	Enumerate all small ordering cases Identify a redundant or decisive clue	Complete case table
27–28	Compare totals using common units Construct alternatives when data are insufficient	Fair-comparison critique
29–30	Complete an unfamiliar mixed set Choose repair tasks by error type	Transfer and delayed recheck
31–32	Compare front and top views Show what a view does not determine	Two-model demonstration
33–34	Test boundary inputs in a procedure Repair an incorrect stopping rule	Debugged algorithm
35–36	Separate constraints from preferences Compare two feasible designs	Criteria-based decision
37–38	Create a must/could/cannot puzzle Test its clarity and solution count	Original puzzle with proof
39–40	Complete the Year 4 checkpoint Compact mastered work and plan targeted extension	Portfolio-based progression

Term / weeks

Teaching focus

Evidence to look for

1–2

Check source relevance and observation method Identify copied or dependent reports

Evidence-origin map

3–4

Find a missing link in a proposal Classify new facts as support, challenge or irrelevant

Argument evaluation grid

5–6

Translate if and only if Build a case refuting a reversed rule

Rule translation and witness

7–8

Distinguish must, could and cannot Use the right kind of proof for each

Case-based explanation

9–10

Review a mixed argument and logic set Recheck one error in a new context

Term learning record

11–12

Test two statements separately Test them together for a unique quantity

Data-sufficiency table

13–14

Fold and label a cube net Infer opposite faces without a physical model

Labelled-net task

15–16

Trace an if–otherwise loop Explain its stopping condition

Branch-and-state trace

17–18

Compare a measurement with an anecdote Design an independent check

Improved evidence plan

19–20

Find a simple counterexample Repair the false claim carefully

Claim, exception and revision

21–22

Distinguish weakening from disproving Compare two competing explanations

Qualified argument judgement

23–24

Separate inclusive and exclusive alternatives Negate an all-claim accurately

Language precision task

25–26

Enumerate all small ordering cases Identify a redundant or decisive clue

Complete case table

27–28

Compare totals using common units Construct alternatives when data are insufficient

Fair-comparison critique

29–30

Complete an unfamiliar mixed set Choose repair tasks by error type

Transfer and delayed recheck

31–32

Compare front and top views Show what a view does not determine

Two-model demonstration

33–34

Test boundary inputs in a procedure Repair an incorrect stopping rule

Debugged algorithm

35–36

Separate constraints from preferences Compare two feasible designs

Criteria-based decision

37–38

Create a must/could/cannot puzzle Test its clarity and solution count

Original puzzle with proof

39–40

Complete the Year 4 checkpoint Compact mastered work and plan targeted extension

Portfolio-based progression

Thinking Skills

Not sure where to begin?

Evidence and useful questions: relevance, reliability and independence

Arguments and evaluation: assumptions, strengthening and weakening

Rules and deduction: if, only if, and alternatives

Constraints and search: must, could and cannot across cases

Quantitative reasoning: data sufficiency and fair comparison

Spatial reasoning: cube nets, views and what is hidden

Patterns and algorithms: branches, repeats and termination

Strategic and creative reasoning: counterexamples and design criteria

Year 4 Thinking Skills test

Suggested 40-week sequence