Mixed Problems — Shift Handover

Progression 2 (Years 3–4) Number | Applying place value, addition/subtraction, arrays, and basic facts in mixed zoo/conservation scenarios with a mini-check.

Duration: 60 mins Strand: Number Context: Keeper shift handover; restoration task board Representations: Learner choice; strategy tagging

Learning Intentions & Success Criteria

Te Mātaiaho: use place value and multiplicative thinking NZC L2–3: apply additive/multiplicative strategies Key idea: choose, label, justify

Ākonga are learning to:

Select and apply efficient strategies to mixed problems.
Explain and tag strategies used.
Check reasonableness with estimation.

Success looks like:

I can match a problem to a fitting strategy and name it.
I can show working clearly for someone taking over my shift.
I can estimate and verify my answer.

Teacher prompts

“Which strategy is most efficient here?”
“How will you label your steps?”
“What is your estimate first?”

Kupu / Vocabulary

estimate / tata
strategy / rautaki
justify / whakamana
reasonableness / tika o te whakaaro
verify / manatoko
label / tapanga

Materials

Mixed problem set (add/sub/arrays/facts to 1 000).
Strategy tags/icons; mini-check sheet (6 items).
A5 Handout: Progression 2 core mixed or generator “Mixed (add/sub/×/÷).”
Strategy passport (Progression 2).

Lesson Flow

Hook (5 mins)

Keeper handover board with 4 tasks (add, subtract, array, fact); students pick which strategy to use.

Model (8 mins)

Model tagging: “This is near-100 addition → tidy numbers.”
Model array/fact: choose multiplication/array vs. repeated addition.

Stations (20 mins)

Set A: Add/sub (tidy, add-on) problems.
Set B: Arrays/fact families.
Set C: Choice problems; tag strategy used.

Mini Check (10–12 mins)

6 items: PV compare, addition, subtraction, array total, fact family, choose-your-strategy word problem.

Reflection (5 mins)

Strategy passport update (Progression 2 version forthcoming).
Pair share: “I chose ___ because ___.”

Place-based options

Shift board built from Hamilton Zoo / Waikato restoration scenarios; rotate weekly.

Emphasize strategic choice and communication for handover: clear working, labeled strategy, quick estimate.

Differentiation & Support

Scaffolds

Offer a strategy menu for each problem set.
Limit to add/sub only for some learners.
Provide sentence frames for justification.

Extensions

Require two strategies for one problem.
Create a mixed problem set for peers.
Use estimation to detect errors in a worked example.

Common Misconceptions

Choosing a strategy that does not fit the numbers. Remedy: compare options first.
Skipping estimation and trusting first answer. Remedy: require an estimate.
Unclear working for handover. Remedy: label steps with strategy tags.

Assessment & Evidence

Mini-check accuracy; note strategy matches.
Station work: clarity of tagging and representation.

Whānau Connection

Send home a “shift handover” problem for whānau to solve and label strategy.
Invite whānau to share a mixed-number task from mahi or home.

Handout Link

Use Progression 2 core mixed handout or generator “Mixed (add/sub/×/÷),” 24–28 questions. Capture reflections in the Progression 2 passport.

Strategy Passport: printable A4 (fold to A5).

Back to Number Sense Journey (Progression 2)