Chance Investigators Report Back — Year 3

Students become chance investigators as they design, repeat and explain a simple counter-draw experiment. They name possible outcomes, use a consistent draw–record–replace–mix method, tally two 20-trial runs and compare their records. The learning focus is clear reporting: what did the evidence show, and what can a short run not prove?

The unit centres on a bag containing three blue and two yellow counters. Fictional records of 13 blue/7 yellow and 10 blue/10 yellow provide contrasting examples without implying that actual results must be equal or match a fixed ratio. Students then plan and record their own trials, discuss a partner activity, complete transfer tasks and report a justified finding with a stated limit.

What's included

• 25-page unit plan PDF: contents page, three-page teacher guide and 21 resource/answer pages.
• Colour display, 12 model/practice cards across four pages, three-page chance investigation activity, guided/core/transfer recording sheets, transfer rehearsal, assessment and rubric.
• Six red answer/marking pages immediately after their matching student pages.
• Editable 18-slide teaching presentation in PPTX format.
• Editable 26-slide quiz in PPTX format, including 12 question-and-answer pairs.
• Combined watermarked preview PDF.

Formats and answers

Digital PDF unit plan: 25 pages. Editable PPTX teaching presentation: 18 slides. Editable PPTX quiz: 26 slides. Six adjacent red answer/marking pages are included in the unit plan; each quiz question has a following answer/explanation slide.

Teacher benefits

Repeatable trial rules, complete student recording spaces, comparisons of varied short runs, differentiated teacher guidance and an assessment rubric linked to observable evidence.

Digital product and licence

Digital teaching resources only; no physical item. For use in the purchasing teacher's classroom under the store's applicable licence terms.

Learning focus and classroom use

Five 45–60-minute lessons. Model the trial rules, practise recording and comparisons, then assess an independent procedure and evidence-based conclusion. Teacher guidance includes support with recording, a core two-run task and extension through comparing methods and limitations.