人教版本小学四年级数学上册的《数学广角》PPT学习课件

数学广角/3z6yh/96750.html/w8k4r/96751.html/6nbvu0c/96753.html/8cybwk1/96757.html/xgq/96759.html/uzh62/96763.html/v60j/96765.html/ystax/96766.html/eh5jon4r/96768.html/6z0uua/96769.html/3z6yh/96748.html/w8k4r/96761.html/6nbvu0c/96767.html/8cybwk1/96770.html/xgq/96771.html/uzh62/96772.html/v60j/96773.html/ystax/96774.html/eh5jon4r/96775.html/6z0uua/96776.html/3z6yh/96747.html/w8k4r/96749.html/6nbvu0c/96752.html/8cybwk1/96754.html/xgq/96755.html/uzh62/96756.html/v60j/96758.html/ystax/96760.html/eh5jon4r/96762.html/6z0uua/96764.html/3z6yh/96777.html/w8k4r/96778.html/6nbvu0c/96779.html/8cybwk1/96780.html/xgq/96781.html/uzh62/96782.html/v60j/96783.html/ystax/96784.html/eh5jon4r/96785.html/6z0uua/96786.html/3z6yh/96787.html/3z6yh/96788.html/cms80/article/add_save.php/w8k4r/96790.html/6nbvu0c/96791.html/6nbvu0c/96792.html/8cybwk1/96793.html/8cybwk1/96794.html/xgq/96795.html/xgq/96796.html/cms80/article/add_save.php/uzh62/96798.html/ystax/96799.html/ystax/96800.html/v60j/96801.html/v60j/96802.html/eh5jon4r/96803.html/eh5jon4r/96804.html/6z0uua/96805.html/6z0uua/96806.html/yyk/ncbdebyhyy/article/14121.html/yyk/bjwrzyyy/article/14191.html/yyk/huabo/article/14194.html/yyk/shzygcyy/article/14492.html/yyk/bldgyy/article/14499.html/yyk/hljyjlnyy/article/14500.html/yyk/bldgyy/article/14501.html/yyk/ncbdebyhyy/article/14502.html/yyk/gzjgyy/article/14503.html/yyk/gzjgyy/article/14504.html/yyk/jnamfcyy/article/14507.html/yyk/gzjgyy/article/14508.html/yyk/jnamfcyy/article/14509.html/yyk/bldgyy/article/14510.html/yyk/njxxhyy/article/14511.html/yyk/bjqhggtyy/article/14512.html/yyk/xagyszxmryy/article/14513.html/yyk/xagyszxmryy/article/14515.html/yyk/zzyxbyjs/article/14516.html/yyk/njjknkyy/article/14517.html/yyk/bjqhggtyy/article/14518.html/yyk/xagyszxmryy/article/14519.html/yyk/njjknkyy/article/14521.html/yyk/xagyszxmryy/article/14523.html/yyk/hljhqyy/article/14524.html/yyk/tjaqfcyy/article/14525.html/yyk/gzyxbyy/article/14526.html/yyk/xagyszxmryy/article/14527.html/yyk/njjknkyy/article/14529.html/yyk/xagyszxmryy/article/14530.html/yyk/gzyxbyy/article/14531.html/yyk/cqfeyy/article/14532.html/yyk/bjfygcyy/article/14533.html/yyk/jntnbyy/article/14534.html/yyk/jntnbyy/article/14537.html/yyk/jnxglyy/article/14539.html/yyk/cdxbjzxyy/article/14540.html/yyk/whzjzxyjhdxyy/article/14541.html/yyk/hljzydxbzkyy/article/14542.html/yyk/jntnbyy/article/14543.html（1）请同学们静静的想一想,你打算怎么烙,用了几分钟,它是最少时间吗?

（2）有了想法后,先独自用老师发给你的材料动手烙一烙,然后用自己的语言把烙的过程轻轻的说过同桌听.如果烙3张饼,怎样烙最省时呢？一次能放两个烧饼②每个饼要烙两面③每个饼每面要烙３分钟才熟！！！④已知123操作12311操作123212操作23123分钟操作33123分钟11操作43123分钟111操作53323分钟331操作6323分钟122+3分钟操作733分钟1+3分钟ok操作83ok3分钟1+3分钟okok操作9313分钟1+3分钟1ok操作10313分钟+3分钟ok33+3分钟操作1133分钟+3分钟ok+3分钟okok＝9分钟操作12①烙2张饼需要6分钟，烙3张饼的最佳方案需要9分钟。②每次烙饼，锅里都有两张饼，速度最快。

烙5张饼