<p class="ql-block">第一单元 四则运算</p> <p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=DD6225CA-615E-462D-9B35-9DF1BAD8E52D" target="_blank">《四则运算例1》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=754FB441-7DFC-43A6-902E-C2F62FE72C2D" target="_blank">《四则运算例2》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=C1BB2C8D-7C1E-4107-8A46-94DBB6B16BC5" target="_blank">《四则运算例3》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=2B7BE66D-C241-4123-98A4-B73230E29A36" target="_blank">《四则运算-括号 例4》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=9EFDFF0C-5DFB-4625-BD6C-E1A563CF4C84" target="_blank">《四则运算例5-租船问题》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=061705EA-55C7-4152-A7FA-6D0FD1BD433F" target="_blank">《四则运算总结复习课》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=5DB6F2CF-B0B0-47DB-AD22-361981A71882" target="_blank">《四则运算整理和复习 例1、2、3（复习）》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=BFA17B03-C582-4229-8C05-659AD8B8C409" target="_blank">《四则运算（例4、例5）复习课》</a></p> <p class="ql-block">第二单元 观察物体（二）</p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=0D2EEFC8-5920-4963-93B2-EAF3993E0985" target="_blank">《观察物体例1》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=C24471B9-18C8-4AC0-9867-C48B9752A284" target="_blank">《观察物体例2》</a></p> <p class="ql-block">第三单元 运算定律</p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=F111D21E-A363-4498-815C-17DC618AD21E" target="_blank">《运算定律例1 加法交换律》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=E6A0D3C5-80F2-4430-AE62-20E44FB070D6" target="_blank">《运算定律例2 加法结合律》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=7B6E488C-8F2E-48BB-B91C-F508728B4682" target="_blank">《运算定律例3 加法运算定律的应用》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=878A8BCF-F915-4C70-9E06-356B0EAFB779" target="_blank">《运算定律例4 连减的简便运算》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=0257E197-45F5-4540-9941-D9963928AF43" target="_blank">《运算定律例5 乘法交换律》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=FDFB43B4-59F2-481F-AC93-E7F4580000DE" target="_blank">《运算定律例6 乘法结合律》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=450744E8-BE56-4F29-8C18-D870568433EA" target="_blank">《运算定律例7 乘法分配律》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=F3FF69AC-F4B6-4297-8D9A-85CF34CD94A5" target="_blank">《运算定律例8 解决问题策略多样化》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=A641A253-0C66-46BB-B2B5-76B6B65AD86D" target="_blank">《加法运算定律（复习课）》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=E6D93E3C-F783-4189-AAA3-87BD84D3C30D" target="_blank">《乘法运算定律 整理和复习》</a></p> <p class="ql-block">第四单元 小数的意义和性质</p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=546D4067-CC57-4E8C-8437-CC98D3BD635A" target="_blank">《小数的意义例1 小数的意义》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=6497134D-B3E3-40D3-86CD-A4C13CC78261" target="_blank">《小数的意义例2 小数的数位顺序表》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=3D6331F1-9FF1-43A8-A399-C7BDD8BF25D0" target="_blank">《小数的意义例3 小数的读法》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=33B4B08A-52E8-4193-92F4-C9C9C0494F7D" target="_blank">《小数的意义例4 小数的写法》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=EE1F8D8C-6137-4CD6-8382-58DFC97246DE" target="_blank">《小数的性质例1、例2》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=49694EED-8B22-48FB-9EA6-FAB8E155601A" target="_blank">《小数性质的应用例3、例4》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=DD226C85-A2AA-4426-BFA0-1DEB539A56A9" target="_blank">《例5 小数的大小比较》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=1995F365-A1EA-44F5-B85E-57FFAC07926D" target="_blank">《小数的性质和大小比较整理与复习》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=D852174E-78B5-48F7-8046-92E9059E2C3B" target="_blank">《小数点移动引起小数大小的变化例1》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=B0DA29B7-1136-4ACE-B123-B74174E430AE" target="_blank">《小数点移动引起小数大小的变化例2》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=2B6B258F-E245-44F3-9215-E2BA99C425A6" target="_blank">《小数点移动引起小数大小的变化例3 解决问题》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=A421DD03-86B5-4965-8005-FCB0A60535B3" target="_blank">《小数与单位换算例1》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=E28DBFE6-75BA-4A93-9FBE-C42547632CB0" target="_blank">《小数与单位换算例2》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=3E6C310E-DA47-401E-8F34-FC04EC7FAC19" target="_blank">《小数的近似数例1》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=8E0553DA-BA66-489E-A6BA-3CD2D4E4753D" target="_blank">《小数的近似数例2例3 大数的改写》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=4E7AE107-4169-4447-BF1F-3A06BBABE3BF" target="_blank">《小数的意义和性质整理与复习（一）》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=0FF5C364-D097-40C9-B993-7476118E6E98" target="_blank">《小数的意义和性质整理与复习（二）》</a></p> <p class="ql-block">第五单元 三角形</p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=EC4082B7-F5A8-4B08-BCD6-A2282C1A9F79" target="_blank">《三角形的特性》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=19003EDE-4AE8-4F63-9A04-D60DCD629395" target="_blank">《三角形高的画法》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=5804E47C-28D5-4941-A707-67F3FFFD2E61" target="_blank">《三角形的特征例3、例4》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=AE4CE644-D60E-4FD8-89BD-2D34461AACEE" target="_blank">《三角形的分类例5》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=D5F8716C-5658-492C-A510-AF744EA7CA56" target="_blank">《三角形的内角和例6》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=9A6F4749-FF39-4900-841A-0CD077E55A1D" target="_blank">《多边形的内角和例7》</a></p> <p class="ql-block">第六单元 小数的加法和减法</p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=A3E64CD4-AC0D-4B65-B1B9-B4D0EBE9C323" target="_blank">《小数加减法例1、例2》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=F34EEE20-9E28-434D-94A2-1D93373E4D97" target="_blank">《小数加减混合运算》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=669C0446-025A-4FA9-B70A-599C8223B754" target="_blank">《练习十八（复习）》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=BB8AB5CE-CB8E-463A-944D-EF98B8915466" target="_blank">《整数加法运算定律推广到小数例4》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=6BD69F5A-A60A-4B97-A50C-A090C403F2F9" target="_blank">《练习十九（练习）》</a></p> <p class="ql-block">第七单元 图形的运动</p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=49A775B3-AFD3-4224-A575-1C5A8A91B39D" target="_blank">《轴对称图形的性质例1》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=2317B00C-05FE-49FC-9B31-D7B37CE7971E" target="_blank">《轴对称图形的画法例2》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=20582114-4FFC-4A14-A26F-50478E53537F" target="_blank">《平移例3》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=040148DD-4BBA-48B8-A8CE-0F21F6678D07" target="_blank">《平移例4》</a></p> <p class="ql-block">第八单元 平均数与条形统计图</p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=004A1511-1280-4875-BD3F-5120BC4CD122" target="_blank">《平均数例1》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=BD82790F-82FE-4DBC-B9F9-677F7E9D05F9" target="_blank">《平均数例2》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=B54D04BB-00E4-451E-8A43-B6FD42AC0722" target="_blank">《复式条形统计图》</a></p> <p class="ql-block">综合与实践 营养午餐</p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=B01DD0A8-5688-49A3-8F7D-CDC698F4C583" target="_blank">《第八单元总结和营养午餐》</a></p> <p class="ql-block">第九单元 数学广角—鸡兔同笼</p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=810DD2F0-CBF4-430E-A525-C6D6299839E0" target="_blank">《鸡兔同笼-第一课时》</a></p><p class="ql-block"><a href="http://share.lejiaolexue.com/ShareActivity.aspx?newstype=newsinfo&worksid=0&id=1F90FE7C-86DF-4FA3-BE4C-F8877193BDD8" target="_blank">《鸡兔同笼第二课时（复习课）》</a></p>