算數

算數 螢幕截圖  下載  嵌入
  • Multiplication
HTML5 Badge 返回 HTML5 版本

標題

  • Multiplication

描述

你記得九九乘法表嗎?… 我也不記得。以此有趣的遊戲,複習你的乘法、除法和商的算術技巧不得使用計算器!

翻譯者:
潘建宏 (2009)
潘建宏 (2010)

HTML5 版本之翻譯:
翁佳驥 (2016)

學習目標

  • ●用乘法表幫助了解乘法、除法和商
  • ●增加乘法、除法和商的準確度

Standards Alignment

Common Core - Math

3.OA.A.1
Interpret products of whole numbers, e.g., interpret 5 × 7 as the total number of objects in 5 groups of 7 objects each. For example, describe a context in which a total number of objects can be expressed as 5 × 7.
3.OA.A.2
Interpret whole-number quotients of whole numbers, e.g., interpret 56 ÷ 8 as the number of objects in each share when 56 objects are partitioned equally into 8 shares, or as a number of shares when 56 objects are partitioned into equal shares of 8 objects each. For example, describe a context in which a number of shares or a number of groups can be expressed as 56 ÷ 8.
3.OA.A.4
Determine the unknown whole number in a multiplication or division equation relating three whole numbers. For example, determine the unknown number that makes the equation true in each of the equations 8 × ? = 48, 5 = _ ÷ 3, 6 × 6 = ?
3.OA.B.5
Apply properties of operations as strategies to multiply and divide.2 Examples: If 6 × 4 = 24 is known, then 4 × 6 = 24 is also known. (Commutative property of multiplication.) 3 × 5 × 2 can be found by 3 × 5 = 15, then 15 × 2 = 30, or by 5 × 2 = 10, then 3 × 10 = 30. (Associative property of multiplication.) Knowing that 8 × 5 = 40 and 8 × 2 = 16, one can find 8 × 7 as 8 × (5 + 2) = (8 × 5) + (8 × 2) = 40 + 16 = 56. (Distributive property.)
3.OA.B.6
Understand division as an unknown-factor problem. For example, find 32 ÷ 8 by finding the number that makes 32 when multiplied by 8.
3.OA.C.7
Fluently multiply and divide within 100, using strategies such as the relationship between multiplication and division (e.g., knowing that 8 × 5 = 40, one knows 40 ÷ 5 = 8) or properties of operations. By the end of Grade 3, know from memory all products of two one-digit numbers.
3.OA.D.9
Identify arithmetic patterns (including patterns in the addition table or multiplication table), and explain them using properties of operations. For example, observe that 4 times a number is always even, and explain why 4 times a number can be decomposed into two equal addends.
版本 2.03

教學提示

下載教師教學提示 PDF 檔 模擬教學的控制概觀、模型簡化與引導學生思考 ( PDF ).

老師提供的活動

Juego de Aritmética (Basado en Indagación) A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. 此貢獻是由 PhET 所作之設計 Trish Loeblein, traducido por Diana López 高中
國中
作業
指引
數學
Arithmetic Games (Inquiry Based) A gold star indicates high-quality, inquiry-based activities that follow the PhET design guidelines. 此貢獻是由 PhET 所作之設計 Trish Loeblein 高中 實驗室 數學
Alignment of PhET sims with NGSS 此貢獻是由 PhET 所作之設計 Trish Loeblein 高中 其它 化學
地球科學
物理
生物
How do PhET simulations fit in my middle school program? 此貢獻是由 PhET 所作之設計 Sarah Borenstein 國中 其它 生物
地球科學
化學
物理
MS and HS TEK to Sim Alignment Elyse Zimmer 國中
高中
其它 物理
化學
生物
Math facts - Using the Multiplication Chart Tapan Sarkar 國中 實驗室 數學
Back to the Basics Nyetta Abernathy K-5
國中
高中
作業
實驗室
數學
Discovering divisibility rules Stacy Larson 高中
國中
實驗室 數學
Operações Aritméticas Fundamentais Georgyana Cidrão; Francisco Régis Vieira Alves K-5 指引
實驗室
數學
곱셈 나눗셈 연습 SIM 사용설명서 이화국(Wha Kuk Lee) 國中
K-5
作業
概念問題
展示
物理
數學

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設計團隊 第三方諮詢 感謝
  • Michael Dubson (developer/lead)
  • Trish Loeblein