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The task-based approach benefits learners by focusing them directly on the skills area they need to practice. This enables them to improve their learning outcomes and have a sense of achievement. First, students learn from the models and then they are encouraged to do the task themselves in the safe environment of the classroom. This builds learners' confidence and gives them a sense of achievement. The language is presented in contexts and situations that students come across in everyday life.
The new language live lessons allow students to practice functional language in situations that they are likely to encounter. These lessons include DVD or audio clips.
This shows students how the language is used. New digital components have been developed for Cutting Edge Third Edition. The Third Edition builds on all the distinctive features that have made cutting edge a best-selling course with a new worldwide edge.
With fresh, new, integrated DVD material and digital components, learners can be confident of improving their language skills through a carefully balanced range of activities.
These lessons encourage students to investigate global issues and compare and discuss personal and national experiences. Stages of a Task-based Lesson Pre-task The teacher introduces the topic and gives the students clear instructions on what they will have to do at the task stage and might help the students to recall some language that may be useful for the task.
The pre-task stage can also often include playing a recording of people doing the task. This gives the students a clear model of what will be expected of them. The students can take notes and spend time preparing for the task.
Task The students complete a task in pairs or groups using the language resources that they have as the teacher monitors and offers encouragement.
Planning Students prepare a short oral or written report to tell the class what happened during their task. They then practise what they are going to say in their groups.
Meanwhile the teacher is available for the students to ask for advice to clear up any language questions they may have.
These are the flat chisel, the most widely known type, which is used to cut bars and rods to reduce surfaces and to cut sheet metal that is too thick or difficult to cut with tin snips. The cross cut chisel is used for cutting grooves and slots. The blade narrows behind the cutting edge to provide clearance.
The round nose chisel is used for cutting semi-circular grooves for oil ways in bearings. The diamond point chisel is used for cleaning out corners or difficult places and pulling over centre punch marks wrongly placed for drilling.
Although the vast majority of cold chisels are made of steel, a few are manufactured from beryllium copper , for use in special situations where non- sparking tools are required.
Hot chisel[ edit ] A hot chisel is used to cut metal that has been heated in a forge to soften the metal. One type of hot chisel is the hotcut hardy, which is used in an anvil hardy hole with the cutting edge facing up.
The hot workpiece to be cut is placed over the chisel and struck with a hammer. The hammer drives the workpiece into the chisel, which allows it to be snapped off with a pair of tongs.