Fractions: Intro_分數的介紹

Fractions: Intro_分數的介紹 螢幕截圖  下載  嵌入
  • Fractions
  • Equivalent Fractions
  • Improper Fraction
Java Logo 原始模擬教學與翻譯

標題

  • Fractions
  • Equivalent Fractions
  • Improper Fraction
  • Number Line

描述

當您吃 1/3 個巧克力蛋糕配 1/2 杯的柳橙汁時可以探索分數。利用有趣的互動式物件創造您自己的分數。在分數遊戲中,只要正確的配對形狀與數目,就可以獲得星星,請挑戰任何您喜歡的遊戲難度等級,試試看可以收集多少星星!

翻譯者:
Amber Chang (2012)

HTML5 版本之翻譯:
翁佳驥 (2016~)

學習目標

  • Predict and explain how changing the numerator of a fraction affects the fraction's value
  • Predict and explain how changing the denominator of a fraction affects the fraction's value
  • Convert between a picture of a fraction, a numeric fraction, and a point on a number line
  • Build matching fractions using numbers and pictures
  • Compare fractions using numbers and patterns

標準對齊

共用核心 - 數學

1.G.A.3
Partition circles and rectangles into two and four equal shares, describe the shares using the words halves, fourths, and quarters, and use the phrases half of, fourth of, and quarter of. Describe the whole as two of, or four of the shares. Understand for these examples that decomposing into more equal shares creates smaller shares.
2.G.A.3
Partition circles and rectangles into two, three, or four equal shares, describe the shares using the words halves, thirds, half of, a third of, etc., and describe the whole as two halves, three thirds, four fourths. Recognize that equal shares of identical wholes need not have the same shape.
3.G.A.2
Partition shapes into parts with equal areas. Express the area of each part as a unit fraction of the whole. For example, partition a shape into 4 parts with equal area, and describe the area of each part as 1/4 of the area of the shape.
3.NF.A.1
Understand a fraction 1/b as the quantity formed by 1 part when a whole is partitioned into b equal parts; understand a fraction a/b as the quantity formed by a parts of size 1/b.
3.NF.A.2
Understand a fraction as a number on the number line; represent fractions on a number line diagram.
3.NF.A.2a
Represent a fraction 1/b on a number line diagram by defining the interval from 0 to 1 as the whole and partitioning it into b equal parts. Recognize that each part has size 1/b and that the endpoint of the part based at 0 locates the number 1/b on the number line.
3.NF.A.2b
Represent a fraction a/b on a number line diagram by marking off a lengths 1/b from 0. Recognize that the resulting interval has size a/b and that its endpoint locates the number a/b on the number line.
版本 1.0.12

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