steady · ages 12–14 · 20 minutes
The Library Cart Shift
Four student volunteers each shelved one genre on one cart during one afternoon shift. Match each volunteer to the genre, cart letter, and shift time.
NameDate
| art books | mysteries | poetry | science books | |
|---|---|---|---|---|
| Amara | ||||
| Ben | ||||
| Chloe | ||||
| Dev |
| cart J | cart K | cart L | cart M | |
|---|---|---|---|---|
| Amara | ||||
| Ben | ||||
| Chloe | ||||
| Dev |
| 1:00 | 2:00 | 3:00 | 4:00 | |
|---|---|---|---|---|
| Amara | ||||
| Ben | ||||
| Chloe | ||||
| Dev |
Clues
- Amara did not shelve mysteries and did not use cart J
- poetry was shelved at 3:00
- Ben shelved science books
- Chloe used cart M
- science books were shelved exactly one hour after art books
- Dev worked at 4:00
- cart K was used at 1:00
- Chloe did not shelve mysteries
- mysteries were on cart J
Need a nudge? The art books and mysteries frame the shift. Use their times with the fixed cart clues to place the volunteers.
Print at 100% scale. The clue list is designed for a single page with room for notes.
Answer key · PZ-002
The Library Cart Shift
| Volunteer | Genre | Cart | Shift |
|---|---|---|---|
| Amara | art books | cart K | 1:00 |
| Ben | science books | cart L | 2:00 |
| Chloe | poetry | cart M | 3:00 |
| Dev | mysteries | cart J | 4:00 |
Verification: 13,824 possible one-to-one assignments tested; exactly one solution passed every encoded clue.