The broad and narrow key challengeFoundation Digital Tech · T3 W25–26 · Projects / X08

Complete starting source

Pretend bike-card collection: wheel and handlebar drawings both use BIKE. A BIKE request returns both. Its maker keeps that version, then changes the wheel key to WHEEL in another complete version. WHEEL returns its wheel drawing. No riding occurs.

Day

128

Extension

If a safe actual broad object is available, distinguish it from its picture.

Id

X08

Job

Keep two complete versions and try a broad versus narrow request.

What this can show

Optional larger practical offer; no complete-year/independent-motor/real audience/progress/translation claim. Local actual curriculum opportunities need professional judgment.

Materials

Broad scrap cards, thick mark-maker or neutral faithful helper; approved optional device only for actual selected system work. Adult handles any cutting and checks local safety; no small pieces or purchase.

Notice

Actual first/revised meanings and a job-related keep/change reason stay visible; a different version need not be better.

Three routes to the same purpose

1. Id

   D128-R1

   Target

   Actual first/revised meanings and a job-related keep/change reason stay visible; a different version need not be better.

   Words

   Retain a full paper/faithful record, alter one key on another copy, and show every matching entry—including two matches.

2. Id

   D128-R2

   Target

   Actual first/revised meanings and a job-related keep/change reason stay visible; a different version need not be better.

   Words

   Explicitly choose Version1/Version2 in the later reviewed tool. Compare all eight fields/identities. Restore/replace/clear requires a named choice.

3. Id

   D128-R3

   Target

   Actual first/revised meanings and a job-related keep/change reason stay visible; a different version need not be better.

   Words

   Direct one change through usual communication; an agreeing helper preserves both complete records and reads their results. Keeping the broad version is valid.

Next teaching

Keep two complete paper records and change one stated key only. Try broad and narrow requests and invite either version for the chosen job.

Steps

1. Choose your useful job: Keep two complete versions and try a broad versus narrow request. Keep an own choice before the ordinary worked reasoning.

2. Read the complete starting source and its key. Decide one item representation worth making or directing; a described/tactile record can stand beside paper.

3. Make one item/key entry with an explicit link. Add up to two others only if they serve your chosen job; blank extra places are fine.

4. Try one wanted request and show every match, or state that no matching entry is present. When the job is paper, say paper; record actual device/operator/input/display only where encountered.

5. If useful, retain a whole first record and make one chosen change in a separate record. Compare meanings for the job, rather than praise length, speed or decoration.

6. Choose keep/change/rest/finish. Keep the own record privately or ask a willing reader to try one request; no actual response is invented.

Title

The broad and narrow key challenge