戲偶要做新戲服，孩子幫忙裁布。第 1 關把紙型一片一片鋪到布捲上（例如做 3 頂帽子，每頂用 2/5 塊布），數出一共用了幾個 1/5，學會整數乘以分數；第 2 關一塊正方形的布是 1，先拖直的剪刀剪下 3/4，再拖橫的剪刀留下那一塊的 2/3，兩刀都留下的地方就是 3/4 的 2/3，剪對了布上會出現小格子，孩子數格子寫出答案；第 3 關要寫成最簡分數，有些布是 1 又 1/2 塊，練帶分數乘以分數。
適合年級：五年級（約 10～11 歲）。對應 108 課綱（十二年國教）數學單元：五年級「分數乘法（整數乘以分數、分數乘以分數）」。各版本教科書的單元順序不同，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，題目有注音，也會念出來。
陪玩小提醒：剪好以後，整塊布被分成「分母乘分母」個小格子，留下的是「分子乘分子」個，這就是分數乘法的算法。也可以問問孩子：乘以一個比 1 小的分數，為什麼答案會變小？
The glove puppets need new costumes and children cut the cloth. In level 1 they lay paper patterns along the cloth rolls (3 hats, 2/5 of a roll each) and count how many fifths they used: a whole number times a fraction. In level 2 a square of cloth is 1: drag the vertical scissors to cut 3/4 of it, then the horizontal scissors to keep 2/3 of that piece. The part kept by both cuts is 2/3 of 3/4; when both cuts are right the cloth shows a grid and children count the squares to write the answer. Level 3 asks for the simplest form, and some pieces of cloth are 1 1/2 squares (a mixed number times a fraction).
Suits Grade 5 (about age 10–11) in Taiwan. Taiwan curriculum (12-year basic education) unit: Multiplying fractions (whole numbers and fractions) (Grade 5). Free with no ads and no sign-up, in Traditional Chinese with zhuyin and in English, read aloud. See the Taiwan elementary maths curriculum map.