孩子用手指從每隻松鼠拉一條線到一顆橡果，一個配一個；配不到的那一邊就比較多，再點一點沒配到的，數出多了幾個。第二關先猜再連線驗證；第三關一排排得開開的、一排擠在一起，練習「看起來比較長，不一定比較多」。
適合年級：幼兒園大班到一年級（約 5～7 歲）。對應課綱單元：大班「一對一對應和比多少」。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，手機、平板、電腦打開就能玩。
陪玩小提醒：這個年紀常覺得「排得比較長的就比較多」。請孩子一個配一個連起來，再看看哪一邊有沒配到的。
Children draw a line from each squirrel to one acorn. The side with left-overs has more, and tapping the left-overs counts how many more. Level 2 asks for a guess first and checks it by matching; level 3 spreads one row out and bunches the other, so children learn that a longer row does not always mean more.
Suits kindergarten to Grade 1 (about age 5–7). Curriculum unit: one-to-one matching and comparing amounts (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.