Grade 3 · lesson 2 of 4

Trace a Product and the Work Behind It

Identify products and services in a supplied production chain.

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Supplied materials

  • Original fictional workshop story: Mira grows cotton; Len spins that cotton into thread; Omi weaves the thread into cloth; Paz sews the cloth into a bag. A courier carries the finished bag to the display room. This invented chain is simplified and complete for this activity.

Learn the idea

Goods and services can appear together in a chain of production. Cotton, thread, cloth, and the finished bag are physical products. Spinning, weaving, sewing, and carrying describe work. Follow the supplied sequence to see how one worker’s output becomes another worker’s input.

A chain description helps us identify dependence, but it does not tell us every detail of a real industry. Our simplified story omits tools, time, and many possible workers. We can say Omi needs the supplied thread to make cloth in this story, without claiming all real cloth is made in exactly this way.

  1. Write cotton, thread, cloth, and bag in the supplied order.
  2. Draw arrows from each input to the next output.
  3. Name the work that turns thread into cloth.
  4. Distinguish the finished bag from the courier’s carrying service.
Worked example

See the method in action

“Cotton → thread → cloth → bag. Thread is Omi’s input; cloth is Omi’s output. Weaving is work, while the cloth is a good. Carrying the bag is the courier’s service.”

Your turn

Check your reasoning

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In this story, which is the input Omi uses?

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See the answer and explanation

Thread.

The story says Omi weaves the thread into cloth. Thread is the supplied material used in that step.

Take it further

Changed chain: Paz repairs an old bag using a new strap, instead of sewing a whole new bag. Name the good and service in that step. Model reasoning: “The replacement strap is a good; attaching it while repairing the old bag is work, a service. Repair changes the chain without changing that distinction.”

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Check the subject sources

These LifeStarter passages, scenarios and exercises are authored for this Academy with AI assistance and review. External resources keep their publishers’ terms. A grade label suggests a starting level; it does not establish alignment with your school’s complete requirements.