【其它话题】愁死了,小三数学题怎么做?在线等指教!Candice makes gift boxes during her free time.
She charges 40 cents for a triangular box, 50cents for a heart-shaped box and 60 centss for a cylindrical box.
Last sunday, she sold 16 diffierent types of gifts boxes and collected a total of $8.
How many of each type of box did she sell?
受不了,文科生太费脑。求各路高手指教。该帖荣获当日十大第2,奖励楼主18分以及27华新币,时间:2016-04-27 22:00:01。
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Guess and Check就是这么教的,方法叫作guess and check.一边猜一边算出来验证,直到正确的答案。一般是猜个俩三次,三四次的一定会有答案的。小学三年级是没有方程式的,用model解题。对小孩子来说比较直观增强理解,不过好像也是有弊端的。据说到了中学学代数xyz的时候,小朋友的脑子又觉得不够用了。