PR-0794UK Proofreading and Editing - Upper
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How does a microwave oven work?<br />
Teachers notes<br />
Lesson focus<br />
Punctuation<br />
• Capital letters for sentence beginnings<br />
• Grammatical commas<br />
• Commas in lists<br />
• Brackets<br />
• Apostrophes in contractions<br />
Grammar<br />
• Verb tenses<br />
• Adverbs<br />
Spelling<br />
• Confused words: threw/through,<br />
there/their<br />
• Misspelt words<br />
Vocabulary<br />
• Antonyms<br />
Teacher information<br />
An explanation seeks to explain how something works, is made or how or why things happen.<br />
Answers<br />
A microwave oven cooks food from the inside out.<br />
out<br />
Here’s how it works. When you press ‘start’ on the<br />
works<br />
oven, microwaves (short radio waves) are produced.<br />
produced<br />
These waves pass through any glass, paper or plastic<br />
through<br />
containers you have put in the oven <strong>and</strong> quickly find<br />
quickly<br />
their way into the food. The microwaves then make<br />
their<br />
the water <strong>and</strong> fat molecules in the food vibrate,<br />
vibrate<br />
causing heat. This is what warms up your favourite<br />
favourite<br />
hot drink or cooks your food. It is usually much<br />
usually<br />
quicker than cooking with an electric or gas oven.<br />
electric<br />
This is because these ovens work by heating food<br />
heating<br />
gradually from the outside in.<br />
gradually<br />
1. (a) Missing punctuation is in bold type.<br />
2. (a) (i) cooked (ii) worked (iii) warmed (iv) pressed<br />
(b) Adverbs are underlined in bold.<br />
Viewing Sample<br />
quickly, gradually<br />
3. Spelling errors are in italic type.<br />
out, works, produced, through, their, vibrate, favourite, usually, electric, heating<br />
4. Possible answers.<br />
(i) slowly (ii) lose (iii) cooling<br />
(iv) mine, our (v) suddenly (vi) finish, end<br />
52 <strong>Proofreading</strong> <strong>and</strong> editing skills Prim-Ed Publishing www.prim-ed.com
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