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PARENT GUIDE · DB-IS-15

What Does a Phone Cost Nature? Energy and E-waste

Track: Measuring my world · Tinkerer · Grades 4–6 · Ages 9–12
⏱ lesson 10–15 min · shared activity 10 min · paper and pencil

1. What your child learns and why

Your child considers energy use and a next step for old devices: asking about repair, passing on a working device or finding a collection point with an adult. The aim is a small shared choice, without blame. The fictional simulation sends and saves nothing.

2. Three questions for dinner

3. 10 minutes together, no screen — device census

On paper, tally working but unused devices while looking together from the outside. Mark uncertain cases “not sure”; an adult can check later. Choose one device and write one sentence about its next step. The child asks an adult to find the nearest collection point and check what it accepts.

4. What success looks like

Your child explains one choice and asks an adult for help. A small plan is enough; no purchase or immediate visit is needed.

5. Common difficulties

Unsure whether it works? Leave it to an adult to check. Cannot decide? Write “ask about repair” rather than making a promise. You do not need to know the answers. Say: “Let’s find out together.”

6. Safety

An adult handles batteries and old devices. Never open devices or batteries. Never put batteries in the rubbish bin. Ask an adult about charging and follow the device’s instructions.

Who to contact (Bulgaria): 116 111 · 124 123 (safenet.bg) · 112

7. Where to go next

Before: DB-IS-14 “The Wind: Direction and Strength” · Next: DB-RK-01 “Turn On, Shut Down, Restart — the Right Way”

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Lesson: kagami.bg/en/deca/DB-IS-15_kolko-struva-telefonat.html · BG: kagami.bg/deca/DB-IS-15_kolko-struva-telefonat.html
VERIFIED · 22.10.2026 · AI help: yes · reviewer: awaiting teacher and psychologist · East Accelerator Foundation · free · licence CC BY-SA 4.0