Friday, October 09, 2009
Fire corals are so called because of their powerful stinging hairs or nematocysts. These are used primarily for defence against fish like parrotfish which would otherwise nibble the coral. However, they are strong enough to injure divers who brush their skin against them, causing burning and itching. If this happens rinse with seawater and apply vinegar or methylated alcohol on the affected area. In a severe case anti-histamines can help, but seek medical advice.Colonies of fire coral are extremely important in building coral reefs. However, they are not true corals. They are, in fact, hydroids. The word hydroid means water animals. Other hydroids often look like ferny fronds growing from rocks. The fire coral is different: it looks like a hard coral.Fire corals are yellowish to brown in colour, often with white tips. There are several species, with different growth forms. Some look like plates, some are encrusting but maybe the most familiar is the branching form shown in our photo .
-Vocabulary: time ,seasons,days of the week, dates and other time expressions with their prepositions. Click in TIME EXPRESSIONS and TIMES AND DATES EXTRA which is another photocopy with more detailed information about the same topic.
-Grammar: We checked the entry tests you dad done the week before and made special emphasis on the most common mistakes: simple present, simple past , countable and uncountable nouns, object pronouns and so on.
- Homework: Grammar book .Unit 59 about subject and object pronouns.
- Grammar: Student´s book. pg 6. Phrasal verbs : Those with literal meanings, other with non-literal meanings,the same verb with different particles and different meanings , phrasal verbs with more than one meaning. pg 130 and 131 : Basic rules and excises. We focussed on verbs with objects separable and non-separable. A pair work activity titled PHRASAL VERBS and the ANSWERS TO PHRASAL VERBS
- Speaking: we just started to talk about national stereotypes. St.B.pg 7
- Homework: workbook, pg 4,5
Etiquetas: THE SEA