Pilih objek, kemudian tentukan sama ada pembaris atau pita ukur lebih sesuai.
Langkah 1
Pilih objek dan alat
Pilih objek, kemudian tentukan sama ada pembaris atau pita ukur lebih sesuai.
objek → alat ukur
alat ukur = 量度工具 先选要量的东西，再决定用尺子还是卷尺。短而直的东西用尺子；长的或弯的东西，例如桌边、腰围，用卷尺比较方便。 例子：用 30 cm 的尺子量 90 cm 的桌子要移动 3 次，30 + 30 + 30 = 90 cm，用卷尺一次就够。 注意：卷尺要拉直，松松垂下来量到的数会比实际长。
alat ukur = measuring tool Choose the object first, then decide between a ruler and a measuring tape. A ruler suits short, straight things; a tape is easier for long or curved things such as a table edge or a waist. Example: a 30 cm ruler must be moved 3 times along a 90 cm table, 30 + 30 + 30 = 90 cm, a tape needs one go. Watch out: pull the tape straight; a sagging tape gives a reading that is too long.
Langkah 2
Anggar sebelum ukur
Catat anggaran dalam cm atau m sebelum membuat ukuran sebenar.
anggar dahulu = estimate first Before the real measuring, write your estimate in the table with cm or m. Estimating first shows whether your sense of length is good; changing the estimate after measuring makes it pointless. Example: write window about 80 cm, then measure 90 cm; the gap is 90 - 80 = 10 cm. Watch out: an estimate needs a unit too, because a bare 80 tells nobody anything.
Langkah 3
Banding hasil
Susun keputusan dalam jadual dan bincangkan anggaran yang paling hampir.
objek · anggaran · sebenar
jadual keputusan = 结果表 把每样东西的名称、估计值和实际值排成一个表，再算出每一行相差多少。差距最小的就是最接近的。 例子：铅笔盒估 20 cm 实际 22 cm，差 22 - 20 = 2 cm；书估 25 cm 实际 30 cm，差 30 - 25 = 5 cm，铅笔盒估得较准。 注意：比较时看的是差距，不是哪个估计数最大。
jadual keputusan = results table List each object with its estimate and its actual length in a table, then work out the gap in every row. The row with the smallest gap holds the closest estimate. Example: pencil case estimate 20 cm, actual 22 cm, gap 22 - 20 = 2 cm; book estimate 25 cm, actual 30 cm, gap 30 - 25 = 5 cm, so the pencil case estimate wins. Watch out: compare the gaps, not which estimate is the biggest number.
Semak cepat · Soalan 1 / 2
Cuba sendiri
Pilih jawapan. Jika belum tepat, baca petunjuk dan cuba lagi.
Untuk mengukur meja kecil, alat sesuai ialah…
mengukur meja kecil = 量一张小桌子 题目问：要量一张小桌子的长度，什么工具合适。先想清楚要量的是长度，不是重量，也不是水量；再想哪种工具上面印着厘米刻度。 例子：一张小桌子长 60 cm，两张拼起来是 60 + 60 = 120 cm。 注意：每种工具只量一种东西，看工具名称时想想它平时用来做什么。
mengukur meja kecil = measuring a small table The question asks which tool fits for finding the length of a small table. First be sure that length is being measured, not mass or liquid, then think about which tool has centimetre marks printed on it. Example: a small table is 60 cm long, so two tables make 60 + 60 = 120 cm. Watch out: each tool measures one kind of thing; think about what it is normally used for.
Semak cepat · Soalan 2 / 2
Cuba sendiri
Pilih jawapan. Jika belum tepat, baca petunjuk dan cuba lagi.
Dalam jadual penyiasatan panjang, lajur penting ialah…
lajur jadual = table columns The question asks which columns matter most in a length investigation table. Recall what the table in Langkah 3 is for: putting guesses and real lengths side by side. Check by asking whether the columns let you work out a gap. Example: a guess of 40 cm and a real 45 cm must both be recorded to find 45 - 40 = 5 cm. Watch out: every column should connect to length, the topic of this investigation.
Ringkasan
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Ingat: pilih objek dan alat; anggar sebelum ukur; banding hasil.
