The Research Into Teaching Strategy On Vernier Calipers

Presently, the high school physics teachers thought vernier caliper teaching method is sole and the student is high to the vernier caliper question understanding error ratio. Therefore it is the necessity that full understanding and reasonably uses the new curriculum the idea to improve to the vernier caliper teaching.The first chapters model of this paper with document law and the example studying caliper principle and relevance concept. These are findings through the research.1.the caliper principle contains two aspect: The principle (the parallelogram is equal in across flats) , vernier getting stuck subdivide principle; The caliper invention has contained ;2.all above two principle application , Chinese has invented a calliper only , has not invented a vernier; 3. the vernier subdivides principle is to assist effect to carve out more scale mark , to improve numerical reading accuracy thereby being equivalent by traveling scale's. 4.The caliper accuracy points to the number accuracy being ascertained when being to design a caliper , getting rid of to subdivide from minimal graduation of host ruler reaches. Mark of vernier numerical reading device number of degree is that the shares subdivided a number , not that the number , and both are not surely equal referring to the halving lattice traveling scale.The second chapter of the paper study caliper content of courses is pertinent studying theory and learning method. Theory is suitable to different the content studying and aim of learning different from studying.The principle getting stuck learns being fit to adopt significance to study the vernier subdivides the principle studying available theory accumulating the flexibility studying theory or cognition. The former achieves migration's purpose by applying coming regulation , the queen passes the exercise carrying out many style examples on pertinent numerical reading regulation concept , the migration effect learning to practise to apply regulation , the latter again the day after tomorrow is good than the former.the half parts of the third chapter research students know the length measurement knowledge origin. The diameter carries out measurement on ball by letting a student use the calliper there being no vernier graduation , observes student's operation , numerical reading condition, and is in progress to corresponding operation and result to ask questions. Discovering that the student is affected by the dividing rule , and are fond of putting ball inside the appress host ruler, numerical reading is point with the end exercising getting up that the ruler covers with as numerical reading. By the fact that numerical reading tests the statistics inscribing an answer to the caliper, find that only 53% s student replies are right,and 25% of answer is mixed and disorderly . the integer part is picked up makes mistakes by 9%'s student. 4%'s student numerical reading queen adds supplemental a zero grade .These show having student understanding to relevance concept in numerical reading regulation to have leading to numerical reading mistake by accident obviously. The latter half of the Third chapter bring forward the tentative plan of caliper content of courses teaching . Teaching Strategy leads into the principle teaching getting stuck coming being superior or inferior by letting a student experience a dividing rule and there being no the measurement traveling the bid calliper , is the content teaching's turn to study with speaking significance; Letting a student experience that the floating nothing bid calliper needs to estimate the condition reading is to lead into a vernier subdividing the principle studying. this part of content adopts Random Access Instruction properly. the vernier subdivided and the pertinent concept of principle are needing to part for by the fact that the much style caliper example carries out exercise , and has studied conceptual applying of relevance, exercise carrying out numerical reading again. Theory being skilled numerical reading regulation but composing to train intensifying adopt a behaviourism. The teaching means is to adopt the example printing filmstrip projection way , realizing show and various caliper of principle style to show.