Activity 01
Pairs: Sandwich Steps
Pairs brainstorm and write steps to make a jam sandwich, numbering them in order. They swap lists with another pair, follow the instructions exactly, and note any missing or unclear steps. Pairs revise their lists based on feedback.
Explain how breaking a big task into smaller parts makes it easier.
Facilitation TipDuring Sandwich Steps, provide jumbo cards so children can hold and swap them easily while practicing sequencing language such as 'before' and 'after'.
What to look forProvide students with a picture of a common activity, like making a sandwich. Ask them to write down three steps to complete the task. Check if the steps are logical and in the correct sequence.
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Activity 02
Small Groups: Morning Routine Map
Groups draw a flowchart of their morning routine from wake-up to school, including branches for choices like breakfast options. Each member adds one step, then the group sequences and presents to the class. Discuss which steps could combine.
Decompose a daily routine into its individual steps.
Facilitation TipWhen mapping the Morning Routine, give each group a large roll of paper to draw their route so everyone can see the flow and add details together.
What to look forAsk students: 'Imagine you need to pack your school bag for tomorrow. What are the first three steps you would take? Why is it easier to think about packing your bag one step at a time?' Listen for clear identification of steps and understanding of simplification.
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Activity 03
Whole Class: Story Breakdown
Teacher reads a simple story like Goldilocks. Class calls out main events, teacher records on board, and children vote to group into smaller steps. Re-enact as a chain to show sequence importance.
Evaluate the benefits of decomposition for solving problems.
Facilitation TipFor Story Breakdown, read the story aloud once, then pause after each event to let children hold up their picture cards before placing them in order on the board.
What to look forShow students a short video of a simple process, like a robot arm picking up a block. Ask them to draw or write the steps the robot took. Review their drawings or lists for accuracy and order.
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Activity 04
Individual: Toy Tidy Challenge
Each child selects a messy toy area, lists decomposition steps on a template, times themselves tidying, and reflects on how steps helped. Share one insight with a partner.
Explain how breaking a big task into smaller parts makes it easier.
Facilitation TipIn the Toy Tidy Challenge, set a timer for one minute between steps so children experience pressure to plan carefully and adjust their timings.
What to look forProvide students with a picture of a common activity, like making a sandwich. Ask them to write down three steps to complete the task. Check if the steps are logical and in the correct sequence.
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Generate Complete Lesson→A few notes on teaching this unit
Teach decomposition by starting with concrete, familiar tasks before moving to abstract steps. Model think-alouds: ‘I need to pack my bag, so first I put in my reading book, next my jumper, then my water bottle.’ Avoid rushing to the final list; let children test and revise their orders. Research shows that young learners benefit from visual and kinesthetic input, so pair spoken steps with picture cards, gestures, and small-group acting to build secure understanding.
Successful learners will sequence steps logically, explain why order matters, and transfer the strategy to new routines. You will hear clear language about first, next, and last, and see students revising initial plans when steps fail.
Watch Out for These Misconceptions
During Sandwich Steps, watch for children listing steps randomly without order.
Hand each pair a set of jumbo sequencing cards and say, ‘Arrange these so a friend could make the sandwich in the right order.’ Ask children to try making the sandwich from their order to prove whether it works.
During Morning Routine Map, watch for children claiming that big routines like ‘getting ready for school’ cannot be broken down.
Give each group a large strip of paper and ask them to draw a map of the first five morning actions. Circulate and prompt, ‘Which action comes first? What must happen before brushing teeth?’ to reinforce sequence.
During Story Breakdown, watch for children thinking decomposition only applies to computer programs.
Before starting, ask, ‘How did the characters solve their problem step-by-step?’ After ordering cards, ask, ‘Could we use this same idea when we tidy up our classroom?’ to connect the strategy to everyday life.
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