Durtles

This problem came to me while I was doing the English alphabet flashcards with my four year old. Each day I would shuffle the cards and lay them out in front of her, and she would follow my movement until she […]

A. You have 5 identical apples that you want to give to friends, and you have 5 friends who would like apples. Their names are Amy, Bert, Carl, Dina, and Eric. You don’t have to be fair and give the same number […]

A Connect Four game set contains a 6×7 grid, 21 blue chips, and 21 yellow chips. Is there a way to arrange all the chips on the grid so that there are no four consecutive chips of the same colour horizontally, […]

Moon over Water

A rough painting with crayons and pencil crayons on lined A4 paper, of full moon in a clear sky over still water.

作者备注：
发现一周一个故事有点难。龟兔赛跑估计两周可以讲完，之后的走一步算一步吧（笑）。喜欢的话不要忘了注册留言哦！你的留言是我的动力！

小丹故事集

第二章：龟兔……赛跑？

小丹仔细打量着火柴人，说：“你虽然现在看起来是人形，但是在故事里不一定是人类吧？刚好我今天读的这本书里动物的故事特别多。我就从这里面的故事讲起吧。”

火柴人又兴奋地点点头。小丹深吸一口气，开始讲第一个故事。

从前 […]