Briefly introduces children to simple machines and the scientific method, and includes four simple experiments that help readers explore simple machines.
| hid | mid | miid | nid | wid | location_code | location | barcode | callnum | dewey | created | updated |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 857827 | 4588611 | 2330 | 121670 | 191790 | PITR | 389 | PITR28390 | 621.8 Hag | 621.8 | 1579893772 | 1736518457 |
| 1174196 | 4857049 | 2301 | 121670 | 191790 | EIMS | 165 | EIMS202238 | 621.8 HAG | 621.8 | 1581465224 | 1736518457 |
| 2701712 | 6196805 | 2376 | 121670 | 191790 | DUE | 154 | DNE0042373 | 621.8 HAG | 621.8 | 1637782573 | 1736800991 |