用依据说明并修改：独立练习 · 六年级

更换前修理

When an object breaks, replacing it is one option, but it is not always the first useful step. A loose screw in a wooden model or a torn seam in a cloth bag may be repairable. Checking the damage can prevent a useful object from being discarded unnecessarily.

Repair also has limits. An object with a sharp broken edge or damaged electrical parts may be unsafe to handle. Some repairs require particular tools, skills or adult help. The time and supplies needed may also exceed what is available. A decision should consider those conditions rather than treating repair as a rule that applies to everything.

更换前修理

When an object breaks, replacing it is one option, but it is not always the first useful step. A loose screw in a wooden model or a torn seam in a cloth bag may be repairable. Checking the damage can prevent a useful object from being discarded unnecessarily.

Repair also has limits. An object with a sharp broken edge or damaged electrical parts may be unsafe to handle. Some repairs require particular tools, skills or adult help. The time and supplies needed may also exceed what is available. A decision should consider those conditions rather than treating repair as a rule that applies to everything.

更换前修理

When an object breaks, replacing it is one option, but it is not always the first useful step. A loose screw in a wooden model or a torn seam in a cloth bag may be repairable. Checking the damage can prevent a useful object from being discarded unnecessarily.

Repair also has limits. An object with a sharp broken edge or damaged electrical parts may be unsafe to handle. Some repairs require particular tools, skills or adult help. The time and supplies needed may also exceed what is available. A decision should consider those conditions rather than treating repair as a rule that applies to everything.

纸桥草稿

虚构的练习数据或情境，并非真实研究报告。

Our class tested a paper bridge in one trial. My shoes are blue. First we folded one sheet. We added identical blocks one at a time. Before that, we placed the bridge across a gap between two books. The bridge supported four blocks. Four blocks prove every folded bridge is strongest. We recorded the result on a chart.