Repeated Chance Experiments: a week of ready-to-teach maths
Five days of lessons for Year 3 Probability. Print this pack and the week is prepared: each day has a one-page plan and a student worksheet, plus cut-out cards, a mini-check and answers.
Start here: five minutes to Monday
- Skim the week at a glance on the next page.
- Print the five days (plan + worksheet each).
- Cut out the card sheet once; reuse all week.
- Open the free interactive unit on your board.
- Teach from the plan: timings, talk prompts and answers are on one page.
No maths background needed
Written for the busy generalist teacher. Plain words, common muddles, and model answers are on every plan.
The week at a glance
One lesson a day. Run them in order where you can.
| Day | Lesson | Children learn and do | On screen |
|---|---|---|---|
| 1 | Flip once, flip again | Practise the idea with talk, board and worksheet | Board: Flip once, flip again |
| 2 | Ten flips | Practise the idea with talk, board and worksheet | Board: Ten flips |
| 3 | Run it twice | Practise the idea with talk, board and worksheet | Board: Run it twice |
| 4 | Roll the die | Practise the idea with talk, board and worksheet | Board: Roll the die |
| 5 | The uneven spinner | Practise the idea with talk, board and worksheet | Board: The uneven spinner |
Materials (one trip)
- This pack printed (plans, worksheets, cards, mini-check).
- Pencils, scrap paper, and the board or projector for the interactive unit.
- Optional counters, number cards or rulers if your day plan names them.
A note home
This week in maths we work on repeated chance experiments. Ask: What did you practise today? Can you show me with a drawing?
seegongsik.com/au/y3/probability/AC9M3P02/pack
Flip once, flip again
Children practise the idea behind “Flip once, flip again” using talk, the board picture, and a short worksheet. About 40 minutes.
We are learning to
- explain the idea of flip once, flip again in Year 3 words,
- use the board picture to check our thinking,
- record an example on paper.
Success criteria
- I can show one example of today’s idea.
- I can say the idea in a short sentence.
You need
- interactive unit open on “Flip once, flip again”,
- worksheet (next sheet), one per child,
- optional cut-out cards from this pack.
Lesson flow (about 40 minutes)
| 5 min | Warm-up Quick oral examples linked to yesterday if any. Ask: “What do you already know that might help today?” |
| 10 min | On the board Open “Flip once, flip again”. Press through the controls while children predict. Ask: “What changed on the screen? What stayed the same?” |
| 15 min | Worksheet Children complete the day sheet. Circulate for muddles listed below. |
| 10 min | Share Two children share an example. Class finishes the exit sentence. Ask: “In one sentence, what was today’s idea?” |
Watch for
- Skipping the board and only copying answers -- bring them back to the picture.
- Correct answer with no explanation -- ask “how do you know?”.
Make it easier, make it bigger
- Easier: do the first two worksheet items together.
- Bigger: invent one new example for a partner to solve.
Answers and look-fors
- Meeting the idea sounds like a clear sentence about flip once, flip again.
- Drawings or numbers match the board story, not random decoration.
Flip once, flip again
Use the board picture. Show your thinking.
Ten flips
Children practise the idea behind “Ten flips” using talk, the board picture, and a short worksheet. About 40 minutes.
We are learning to
- explain the idea of ten flips in Year 3 words,
- use the board picture to check our thinking,
- record an example on paper.
Success criteria
- I can show one example of today’s idea.
- I can say the idea in a short sentence.
You need
- interactive unit open on “Ten flips”,
- worksheet (next sheet), one per child,
- optional cut-out cards from this pack.
Lesson flow (about 40 minutes)
| 5 min | Warm-up Quick oral examples linked to yesterday if any. Ask: “What do you already know that might help today?” |
| 10 min | On the board Open “Ten flips”. Press through the controls while children predict. Ask: “What changed on the screen? What stayed the same?” |
| 15 min | Worksheet Children complete the day sheet. Circulate for muddles listed below. |
| 10 min | Share Two children share an example. Class finishes the exit sentence. Ask: “In one sentence, what was today’s idea?” |
Watch for
- Skipping the board and only copying answers -- bring them back to the picture.
- Correct answer with no explanation -- ask “how do you know?”.
Make it easier, make it bigger
- Easier: do the first two worksheet items together.
- Bigger: invent one new example for a partner to solve.
Answers and look-fors
- Meeting the idea sounds like a clear sentence about ten flips.
- Drawings or numbers match the board story, not random decoration.
Ten flips
Use the board picture. Show your thinking.
Run it twice
Children practise the idea behind “Run it twice” using talk, the board picture, and a short worksheet. About 40 minutes.
We are learning to
- explain the idea of run it twice in Year 3 words,
- use the board picture to check our thinking,
- record an example on paper.
Success criteria
- I can show one example of today’s idea.
- I can say the idea in a short sentence.
You need
- interactive unit open on “Run it twice”,
- worksheet (next sheet), one per child,
- optional cut-out cards from this pack.
Lesson flow (about 40 minutes)
| 5 min | Warm-up Quick oral examples linked to yesterday if any. Ask: “What do you already know that might help today?” |
| 10 min | On the board Open “Run it twice”. Press through the controls while children predict. Ask: “What changed on the screen? What stayed the same?” |
| 15 min | Worksheet Children complete the day sheet. Circulate for muddles listed below. |
| 10 min | Share Two children share an example. Class finishes the exit sentence. Ask: “In one sentence, what was today’s idea?” |
Watch for
- Skipping the board and only copying answers -- bring them back to the picture.
- Correct answer with no explanation -- ask “how do you know?”.
Make it easier, make it bigger
- Easier: do the first two worksheet items together.
- Bigger: invent one new example for a partner to solve.
Answers and look-fors
- Meeting the idea sounds like a clear sentence about run it twice.
- Drawings or numbers match the board story, not random decoration.
Run it twice
Use the board picture. Show your thinking.
Roll the die
Children practise the idea behind “Roll the die” using talk, the board picture, and a short worksheet. About 40 minutes.
We are learning to
- explain the idea of roll the die in Year 3 words,
- use the board picture to check our thinking,
- record an example on paper.
Success criteria
- I can show one example of today’s idea.
- I can say the idea in a short sentence.
You need
- interactive unit open on “Roll the die”,
- worksheet (next sheet), one per child,
- optional cut-out cards from this pack.
Lesson flow (about 40 minutes)
| 5 min | Warm-up Quick oral examples linked to yesterday if any. Ask: “What do you already know that might help today?” |
| 10 min | On the board Open “Roll the die”. Press through the controls while children predict. Ask: “What changed on the screen? What stayed the same?” |
| 15 min | Worksheet Children complete the day sheet. Circulate for muddles listed below. |
| 10 min | Share Two children share an example. Class finishes the exit sentence. Ask: “In one sentence, what was today’s idea?” |
Watch for
- Skipping the board and only copying answers -- bring them back to the picture.
- Correct answer with no explanation -- ask “how do you know?”.
Make it easier, make it bigger
- Easier: do the first two worksheet items together.
- Bigger: invent one new example for a partner to solve.
Answers and look-fors
- Meeting the idea sounds like a clear sentence about roll the die.
- Drawings or numbers match the board story, not random decoration.
Roll the die
Use the board picture. Show your thinking.
The uneven spinner
Children practise the idea behind “The uneven spinner” using talk, the board picture, and a short worksheet. About 40 minutes.
We are learning to
- explain the idea of the uneven spinner in Year 3 words,
- use the board picture to check our thinking,
- record an example on paper.
Success criteria
- I can show one example of today’s idea.
- I can say the idea in a short sentence.
You need
- interactive unit open on “The uneven spinner”,
- worksheet (next sheet), one per child,
- optional cut-out cards from this pack.
Lesson flow (about 40 minutes)
| 5 min | Warm-up Quick oral examples linked to yesterday if any. Ask: “What do you already know that might help today?” |
| 10 min | On the board Open “The uneven spinner”. Press through the controls while children predict. Ask: “What changed on the screen? What stayed the same?” |
| 15 min | Worksheet Children complete the day sheet. Circulate for muddles listed below. |
| 10 min | Share Two children share an example. Class finishes the exit sentence. Ask: “In one sentence, what was today’s idea?” |
Watch for
- Skipping the board and only copying answers -- bring them back to the picture.
- Correct answer with no explanation -- ask “how do you know?”.
Make it easier, make it bigger
- Easier: do the first two worksheet items together.
- Bigger: invent one new example for a partner to solve.
Answers and look-fors
- Meeting the idea sounds like a clear sentence about the uneven spinner.
- Drawings or numbers match the board story, not random decoration.
The uneven spinner
Use the board picture. Show your thinking.
Talk cards for Repeated Chance Experiments
Cut out. Hold up a card and give an example. Partner checks with the board if needed.
Give an example.
Give an example.
Give an example.
Give an example.
Give an example.
Store in an envelope labelled AC9M3P02 for next year.
Show what you know: Repeated Chance Experiments
Work on your own. Use pictures or numbers.
Answers and look-fors
- Item 1: names the unit idea (repeated chance experiments) in child words.
- Items 2-3: two different correct examples linked to the week’s pictures.
- Item 4: a real muddle (wrong place value, unfair compare, mixed units, etc.).
- At standard: clear example + short explanation. Beyond: teaches a partner with a new example.
Use day-plan look-fors across the week; this check is summative, not a surprise trap.
Descriptor: conduct repeated chance experiments; identify and describe possible outcomes, record the results, recognise and discuss the variation