2.2 understanding acceleration 加速度 教案

《2.2 understanding acceleration 加速度 教案》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、LESSONPLANCourse:PHYSICSGradeLevel:Gradeone/twoTeacher:林华平Date:Title:2.3understandingspeedContent:2.3understandingspeedPRE-LESSONPLANNINGLearningObjectives1.Tointroducethedefinitionsofacceleration.2.Tounderstandhowtousethespeedagainsttimegraphstoshowacceleration..3.Tointerpreting

2、speedagainsttimegraphs.DesigntheAssessment:1.Severalrelatedquestionsarepreparedtoevaluatethestudents.2.Topracticethespeedagainsttimegraphs.DesignAssessmentRubric(ifNeeded)TEACHINGTHELESSONVocabulary:slope[sləʊp]倾斜；斜率gradient['greɪdɪənt]梯度；坡度；倾斜度stationary['steɪʃ(ə)n(ə)rɪ]固定的；静止的；

3、静止flat[flæt]平坦的；扁平的curve[kɜːv]曲线；弯曲；弯曲的；曲线形的ratio['reɪʃɪəʊ]比率，比例section['sekʃ(ə)n]部分；节sketch[sketʃ]草图；略图；素描plot[plɒt]绘图horizontal[hɒrɪ'zɒnt(ə)l]水平线，水平面；水平的；横向vertical['vɜːtɪk(ə)l]垂直线，垂直的，垂直journey['dʒɜːnɪ]行程acceleration加速speedup加速deceleration减速slowdown减速Materials:Procedure:1.Pres

4、entationShowthepicture.-Whatisthemeaningofthissign?-Whatdoesthe7%mean?2.VocabularyReadthekeywordstogether.3.GradientStep1:Introducethedefinitionofgradient.Gradientistheratiooftheverticalrisetothehorizontalrunbetweenanytwopointsonaline.Step2:Determinetheslopeoftheline.•Startwithth

5、elowerpointandcounthowmuchyouriseandruntogettotheotherpoint!•NoticetheslopeispositiveANDthelineincreases!•Speed=Slope=Rise/Run4.DifferentdistanceagainsttimegraphsStep1:Discussthedistanceagainsttimegraphs.•Thegradientofthegraphtellsusthattheobjectisnotmoving.•Thegradientofthegraph

6、tellsusthattheobjectismovingatconstantspeed.•Thegradientofeachgraphtellusthattheyellowobjectismovingfasterthantheblueobject.•Theslopesofeachtangentlineonthegraphtellusthattheobjectismovingfaster.Step4:Explaintheexamples.1.ExerciseDosomeexercisestopracticethedistanceagainsttimegra

7、phs.-Showthepictureandanswerthequestions.-Page16:questions82.Summary1.AssignmentFinishtheworksheet.CheckforStudentUnderstandingby:GuidedPracticeCheckforstudentunderstandingby:•ClosingActivitySummarizingtheLearningSTUDENTWORKIndependentPracticePOSTLESSONACTIVITIESStudentAssessment

8、Providefeedbacktothestudentwiththeresult