位值3-減法（共同核心）
在本課程中，我們將使用位值表來減去 2 位和 3 位數字。我們也將透過借用（分解）來練習減法。
Madison Roberts
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課堂經歷
英語程度 - 未知
美國 1 - 4 年級
To begin class the students will review how to use a place value chart to represent numbers. We will review the vocabulary words equation, digit, number, groups and value. We will then jump into learning how to subtract numbers! The students will use their place value charts to draw or use manipulatives to represent the biggest number in the subtraction problem ( The top/first number for this lesson). We will then learn how to take away drawings or manipulatives to find the answer and write the answer properly in the equation. After we have mastered this skill we will practice some subtraction with borrowing. We will review regrouping (compose) then practice breaking down tens and moving them back into the ones place to borrow (decompose).
學習目標
CCSS.MATH.CONTENT.2.NBT.A.1 Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones.
CCSS.MATH.CONTENT.2.NBT.A.1.A
100 can be thought of as a bundle of ten tens — called a "hundred."
CCSS.MATH.CONTENT.2.NBT.A.1.B
The numbers 100, 200, 300, 400, 500, 600, 700, 800, 900 refer to one, two, three, four, five, six, seven, eight, or nine hundreds (and 0 tens and 0 ones).
CCSS.MATH.CONTENT.2.NBT.B.5
Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.
其他詳情
供應清單
Students will need paper and a pencil. A white board works perfectly if you have one available.
外部資源
學習者無需使用標準 Outschool 工具以外的任何應用程式或網站。
已加入 March, 2020
5.0
673評論
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密蘇裡州 教學證書 在 小學教育
Hi, my name is Madison. I have a Bachelor's of Science Degree in Elementary Education with an emphasis in Social Science and Math. I have a 9 year old son and a 6 year old daughter. We love to play outside and create art with the things we find in nature. I believe that children should have a passion for learning. So let's make things FUN and INTERESTING!評論
一次性直播課程
US$10
每班單堂課
25 分鐘
有105 位學習者完成此課程
即時視訊會議
年齡: 6-10
2-7 每班學員人數
