第一關兩條圍巾沒有對齊，孩子要先把一頭推到木樁旁邊，再點出比較長或比較短的那一條；只看另一頭伸到哪裡會被騙。第二關把毛線往右拉，織出和繩子一樣長的圍巾：太短打不了結、動物冷得打噴嚏，太長拖到地上絆一跤。第三關把三條圍巾從短排到長，送給小鴨、河馬和長頸鹿。
適合年級：幼兒園大班（約 5～6 歲）。對應課綱單元：大班「長短和高矮的比較」。題目都會念出來，也有注音；完整對照請看國小數學課綱對照表。免費、無廣告、不用註冊。
陪玩小提醒：在家可以拿兩支筷子或兩條毛巾比長短，先讓一頭靠在桌邊對齊，再看另一頭。
In level 1 two scarves are not lined up, so children push one end against a post before tapping the longer or shorter one; looking only at the far end can trick them. In level 2 they pull the yarn to knit a scarf as long as a string: too short and the animal sneezes, too long and it trips. In level 3 they order three scarves from short to long for a duckling, a hippo and a giraffe.
Suits kindergarten (about age 5–6). Curriculum unit: comparing length and height (kindergarten). Every instruction is read aloud, in Traditional Chinese with zhuyin or in English. Free with no ads and no sign-up. See the Taiwan elementary maths curriculum map.