Giáo án Looking Back

Ss recall the vocabulary and one structure of Unit 11 from memory before they look at the explanations, and recognise the type of their own mistakes.

Ss cover the memory section of their notes with a sheet of paper. Ss write five words from Unit 11 and one structure they have learned. Then T asks three questions, and Ss answer before they uncover the notes:

• What does reuse mean?
• Which article do we use in front of 'empty box'?
• What is the form of the first conditional?
  Ss then uncover the notes and classify each mistake as: meaning, word form, word order or missing information.

• A list of five Unit 11 words and one structure written from memory.
• Answers to the three questions, for example: 'Reuse means to use something again.' / 'an empty box' / 'If + present simple, will + bare infinitive.'
• A mark for each mistake: M (meaning), F (word form), O (word order), I (missing information).

Ss review the eight target words of Unit 11, understand their meanings and use them in context.

T shows the flashcards one by one. Ss say the word, its meaning in Vietnamese and an example sentence. Target words: reduce (giảm bớt), reuse (tái sử dụng), recycle (tái chế), rubbish (rác), reusable (có thể dùng lại), pollution (ô nhiễm), plastic (nhựa), environment (môi trường).
Then Ss work in pairs: one S reads a meaning in Vietnamese, the other S gives the English word.
Example task: 'Use reuse in a sentence about a cup.'

• A completed vocabulary list with eight words, Vietnamese meanings and one example each. Examples:
  • reduce (giảm bớt): We can reduce plastic bags by bringing our own bag.
  • reuse (tái sử dụng): You can reuse a clean jar to hold pencils.
  • recycle (tái chế): A factory can recycle used paper into new paper.
  • pollution (ô nhiễm): Smoke from factories causes air pollution.
• Ss know the difference between reuse (use again as it is) and recycle (process into new material).

Ss review the rules for a/an/the and the first conditional, and explain how to choose the correct form in a sentence.

T puts two rules on the board:

• A/an introduces a countable singular noun that is not yet specified. Use 'an' before a vowel sound and 'a' before a consonant sound.
• The is used for a specific object that has already been mentioned.
  First conditional: If + present simple, will + bare infinitive. It talks about a possible situation and its future result. Example: If we reuse bags, we will make less rubbish. We do not use will right after if.
  Ss work in groups of four with the explanation on the NeoEdu page and complete Worksheet 2, Part A.

• A rule summary in Ss' notebooks:
  • a/an: a countable singular noun, unspecified. 'an empty box' (vowel sound), 'a clean box' (consonant sound).
  • the: a specific noun already mentioned. 'We will reuse the jar.'
  • First conditional: If + present simple, will + bare infinitive. 'If the tap leaks, Dad will fix it.'
• Ss can say: 'We do not write will after if.' Example: 'If we reuse bags, we will make less rubbish.' (not 'If we will reuse bags...').

Ss apply vocabulary and grammar rules to choose or complete sentences, and explain their choices.

Ss do the exercises below individually, then check in pairs. For each answer, Ss say the reason.

1. You use the same clean box again to hold pencils. You ___ it. A. reuse; B. recycle; C. throw away.
2. You refuse a cup you do not need. You ___ waste before it is made. A. collect; B. bury; C. reduce.
3. A factory processes used paper into new paper. It ___ the paper. A. reuses unchanged; B. recycles; C. stores.
4. Smoke that makes the air dirty is a form of ___. A. pollution; B. protection; C. reuse.
5. A jar is on the table. We will reuse ___ jar. (a / an / the)
6. I need ___ empty box for this project. A. many; B. an; C. a.
7. If we ___ clean paper, we will save it for notes. (find / finds / will find)
8. If the tap leaks, Dad ___ fix it. A. will to; B. is will; C. will.
   Worksheet 1 contains a table for Ss to complete the answers and reasons.

Answers and reasons:

1. A – Keeping the box and using it again is reuse; it is not processed into new material.
2. C – Refusing an unneeded cup reduces waste before it is made.
3. B – Processing used paper into new paper is recycle.
4. A – Pollution means dirty air or water from human activities.
5. the – The jar has already been mentioned (the jar on the table).
6. B – 'empty' begins with a vowel sound, so we use 'an'; 'box' is a countable singular noun.
7. find – In the first conditional, the if-clause uses the present simple.
8. C – The result in the future is 'will + fix'.
   Ss can state the rule for each answer in one sentence.

Ss read a new review text, identify the correct answer with reasons, and state the main idea in their own words.

Ss read the text and answer two questions:
Text: Our class has twelve clean boxes. We plan to use eight as book trays and four as pencil holders. If we reuse these boxes, we will not need to buy new trays or holders. An adult will do any cutting. We will count the useful objects again after a month to see whether the plan worked.
Question 9: How many boxes will become pencil holders? A. Four; B. Eight; C. Twelve.
Question 10: Write the main idea of the text in one sentence in your own words.

• Answer to question 9: A. Four. The text says 'We plan to use eight as book trays and four as pencil holders.'
• Main idea (sample): Our class will reuse twelve clean boxes, so we do not need to buy new ones.
• Ss explain: 'The answer is four because the text gives this number for pencil holders, not for book trays.'

Ss use the vocabulary and the first conditional to write about green actions that they can take in their school or home.

Ss work in groups of four. Each group chooses one problem at school (for example, plastic bottles, paper waste or rubbish in the yard) and writes five sentences. Each sentence must use at least one target word and one first conditional structure.
Example: 'If we reuse plastic bottles, we will reduce rubbish in the yard.'
At the end, each group reads their sentences to the class.
Homework: Ss write a short paragraph of five to seven sentences about one green action at home, using the first conditional at least twice.

• A group poster or paragraph of five sentences. Example:
  • 'If we collect paper, we will recycle it into new paper.'
  • 'If we bring our own bags, we will reduce plastic rubbish.'
  • 'If students use reusable cups, the school will have less rubbish.'
• Ss use correct articles (a/an/the) and the correct first conditional form.
• Homework product: a paragraph of five to seven sentences.