等腰三角形的存在性問(wèn)題(5)

1、等腰三角形等腰三角形的的存在性問(wèn)題存在性問(wèn)題專(zhuān)題復(fù)習(xí)課專(zhuān)題復(fù)習(xí)課說(shuō)考情說(shuō)學(xué)情說(shuō)設(shè)計(jì) 壓軸題的教學(xué)意義與功能1. 引導(dǎo)學(xué)生脫離題海、學(xué)會(huì)數(shù)學(xué)思考、數(shù)學(xué)探究2. 激勵(lì)自己改進(jìn)數(shù)學(xué)教學(xué)，專(zhuān)注培養(yǎng)學(xué)生的數(shù)學(xué)思維能力、激發(fā)學(xué)生的積極性壓軸題題型剖析函數(shù)的核心運(yùn)動(dòng)變化運(yùn)動(dòng)變化數(shù)形結(jié)合的精髓函數(shù)中考數(shù)學(xué)壓軸題的靈魂數(shù)形結(jié)合圖形變化探究的內(nèi)容因動(dòng)點(diǎn)產(chǎn)生的相似三角形問(wèn)題因動(dòng)點(diǎn)產(chǎn)生的直角三角形問(wèn)題因動(dòng)點(diǎn)產(chǎn)生的平行四邊形問(wèn)題函數(shù)圖象中點(diǎn)的存在性問(wèn)題由比例線(xiàn)段產(chǎn)生的函數(shù)關(guān)系問(wèn)題由面積公式產(chǎn)生的函數(shù)關(guān)系問(wèn)題圖形運(yùn)動(dòng)中函數(shù)關(guān)系問(wèn)題代數(shù)計(jì)算說(shuō)理問(wèn)題幾何計(jì)算說(shuō)理問(wèn)題圖形運(yùn)動(dòng)中的計(jì)算說(shuō)理問(wèn)題考綱教學(xué)第一輪復(fù)習(xí)二模模擬訓(xùn)練二?？?/p>

2、前復(fù)習(xí)分?jǐn)?shù)段分?jǐn)?shù)段_3分?jǐn)?shù)段分?jǐn)?shù)段人數(shù)人數(shù)比例比例累計(jì)人數(shù)累計(jì)人數(shù)累計(jì)比例累計(jì)比例總?cè)藬?shù)16最高分140最低分63平均分117=15000.00%00.00%140-15016.25%16.25%130-140425.00%531.25%120-130318.75%850.00%110-120425.00%1275.00%100-110212.50%1487.50%90-10016.25%1593.75%80-9000.00%1593.75%72-8000.00%1593.75%60-7216.25%16100.00%50-6000.00%16100.00%40-5000.00%16100.0

3、0%30-4000.00%16100.00%20-3000.00%16100.00%10-2000.00%16100.00%1000.00%16100.00%題號(hào)題號(hào)小題號(hào)小題號(hào)答案答案人數(shù)人數(shù)最大值最大值 最小值最小值 平均分平均分 標(biāo)準(zhǔn)差標(biāo)準(zhǔn)差 得分率得分率 滿(mǎn)分率滿(mǎn)分率 零分率零分率難度難度單選1D164.04.04.000.00100.00 100.00 0.000.96單選2B164.04.04.000.00100.00 100.00 0.000.98單選3C164.00.03.501.3787.5087.5012.500.94單選4B164.00.03.751.0093.7593.

4、756.250.96單選5A164.00.03.501.3787.5087.5012.500.98單選6D164.04.04.000.00100.00 100.00 0.000.9371164.04.04.000.00100.00 100.00 0.000.9882164.04.04.000.00100.00 100.00 0.000.9693164.00.03.501.3787.5087.5012.500.92104164.00.02.751.9168.7568.7531.250.75115164.00.03.251.6181.2581.2518.750.89126164.00.03.251

5、.6181.2581.2518.750.87131164.04.04.000.00100.00 100.00 0.000.98142164.00.03.751.0093.7593.756.250.97153164.00.03.751.0093.7593.756.250.95164164.00.02.751.9168.7568.7531.250.87175164.00.03.001.7975.0075.0025.000.84186164.00.00.751.6118.7518.7581.250.40191610.04.09.561.5095.6387.500.000.96201166.00.05

6、.631.5093.7593.756.250.95202164.00.03.441.3685.9481.2512.500.86201610.00.09.062.6290.6381.256.250.91211610.00.08.133.3681.2568.756.250.91221610.01.09.442.2594.3893.750.000.94231166.00.04.752.2779.1775.006.250.88232166.00.04.502.6875.0075.0025.000.88241164.00.03.501.3787.5087.5012.500.92242164.00.01.882.0046.8843.7550.000.75243162.00.00.380.819.380.0081.250.38251164.00.03.131.6378.1375.0018.750.85252165.00.01.692.3333.7531.2556.250.59253161.00.00.060.251.250.0093.750.24： 1、通過(guò)對(duì)等腰三角形存在性問(wèn)題的探索，學(xué)會(huì)解相關(guān)問(wèn)題的方法，會(huì)解相關(guān)的簡(jiǎn)單的壓軸題 2、通過(guò)對(duì)等腰三角形存在性問(wèn)題的學(xué)習(xí)，培養(yǎng)運(yùn)用分類(lèi)討論的思想解決問(wèn)題的能力、探究能力、動(dòng)手實(shí)踐和綜合運(yùn)用數(shù)學(xué)知識(shí)解決問(wèn)題能力解等腰三角形存在性問(wèn)題的一般方法準(zhǔn)