四则运算
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初始仿真程序 以及翻译 |
主题
- 增殖
- 除法
- 因式分解
描述
还记得你的乘法表吗？……我也不记得了。运用这个激动人心的游戏来复习你的乘法、除法以及因子分解的能力。不允许使用计算器哦！
示范 学习目标
- 解释乘法表是如何促进乘法、因子以及分解的理解。提高乘法、因子分解、除法的精确度。
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 1.0.15
教师提交的活动
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作者 | 等级 | 类型 | Subject |
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| Juego de Aritmética (Basado en Indagación) |
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Trish Loeblein, traducido por Diana López | 高中 初中 |
家庭作业 指导 |
数学 |
| Preguntas de razonamiento para todas las simulaciones HTML5 |
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Diana López | 本科生 初中 K-5 研究生 高中 本科生-高级 |
讨论 家庭作业 |
物理学 化学 数学 天文学 |
| Arithmetic Games (Inquiry Based) |
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Trish Loeblein | 高中 | 实验室 | 数学 |
| Arithmetic (Multiply) |
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Philippe Guegan | 初中 | 指导 | 数学 | |
| How do PhET simulations fit in my middle school program? |
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Sarah Borenstein | 初中 | 其它 | 化学 地理 生物学 物理学 |
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| Alignment of PhET sims with NGSS |
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Trish Loeblein | 高中 | 其它 | 物理学 生物学 化学 地理 |
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| CCSS Math Alignment with Sims |
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Amanda McGarry | 高中 K-5 初中 |
其它 | 数学 | |
| Fixação da técnica de assertividade | Francisco Aislan da Silva Freitas, Gilvandenys Leite Sales | K-5 | 实验室 | 数学 | ||
| Atividade de Aritmética | Ramon Albuquerque | 初中 高中 |
家庭作业 指导 实验室 |
数学 | ||
| MS and HS TEK to Sim Alignment | Elyse Zimmer | 初中 高中 |
其它 | 化学 生物学 物理学 |
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| How are products and factors related? | Seda Serpin | K-5 | 指导 实验室 |
数学 | ||
| Math facts - Using the Multiplication Chart | Tapan Sarkar | 初中 | 实验室 | 数学 | ||
| Discovering divisibility rules | Stacy Larson | 高中 初中 |
实验室 | 数学 |
| Windows 7+ | Mac OS 10.10+ | iPad and iPad Mini with iOS | Chromebook with Chrome OS |
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Microsoft Edge and Internet Explorer 11, latest version of Firefox, latest version of Chrome.
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Safari 9+, latest version of Firefox, latest version of Chrome.
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Latest version of Safari
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Latest version of Chrome
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| 开发团队 | 第三方支持 | 感谢 |
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