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Title: What Concrete Objects Model Addition and Subtraction in 4th Grade
(yam khoom ua piv txwv ntxiv thiab rho tawm hauv qib 4)
In fourth grade, students begin to explore mathematical concepts through more concrete objects models. This type of learning helps to make abstract ideas easier to understand and build upon.
To introduce addition and subtraction using concrete objects, we can start by having students gather various everyday objects such as apples, oranges, books, or pencils. We can then assign each object a number or label them based on their quantity. Piv txwv li, we can label one apple as “1,” two apples as “2,” three apples as “3,” four apples as “4,” thiab lwm yam.
Tom ntej no, we can have students work in pairs or small groups to compare and contrast the quantities of each object. Piv txwv li, one student can say “I have 3 apples and I want to share them with my friend,” while another student can say “I have 4 apples and I want to take one for myself.”
Once students have learned about the concept of quantity, we can move on to understanding how to add and subtract numbers on these objects. Piv txwv li, if a student has 3 apples and wants to share them with their friend, they would count 3 + 3 = 6 apples. If a student wants to take one apple from another student’s pile, they would count 3 – 1 = 2 apples.
(yam khoom ua piv txwv ntxiv thiab rho tawm hauv qib 4)
By using concrete objects models like apples and pencils, students can better understand the concept of quantity and basic arithmetic operations. This type of learning can help students develop strong foundation skills that will serve them well throughout their academic career.
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