Modeling Subtraction: Overview. Subtraction involves three different types of situations. The first, and the easiest for children to learn, is separation, or taking away, in which one quantity is taken away from another to find out what is left. The second is comparison, in which two quantities are compared to find the difference. The third is part-whole, in which the quantity in the whole set and one part are known, and may be used to find out how many are in the unknown part.
Early instruction should provide many opportunities for children to explore the three types of subtraction situations. Children learn the meaning of subtraction through concrete experiences and then learn to record subtraction in horizontal and vertical forms. Children were introduced to subtraction in Kindergarten and have experience with separating and comparing groups. Many children are now ready to learn the formal structures and rules of subtraction. Using manipulatives to model subtraction is extremely important for children. 0-941355-34-9_L1. Addition and Subtraction Songs: Song Lyrics and Sound Clips. These addition songs and subtraction songs are available from a variety of albums. Use them for teaching skip counting, place value, word problems, buying and selling. Songs for Teaching Addition (Including Skip-Counting Songs) 4 Plus Song – Alan Stern 7 Plus Song – Alan Stern The 9 Rule – Jeff Schroeder 10 Silly Monkeys – Jack Hartmann Add and Step On Ones Rap – Music with Mar.
. – Jack Hartmann Add At a Circus – Music with Mar. . – Jennifer Fixman Add One More – Ron Brown Adding Doubles – It All Adds Up Addition/Subtraction Word Clues Song – Tim Pacific Alligator 10 More (Adding 10 to Any Number) – Jennifer Fixman Bouncing Kangaroos Adding with Six – Music with Mar. . – Music with Mar. . – Arnold Rosenthal Count-Ons – Jeff Schroeder Counting 2's to 20 – Ron Brown Counting by 1, 2, 5 and 10 – Jennifer Fixman Double It Up – Jennifer Fixman Doubles Plus One – Jeff Schroeder Eight Jumping Adding Puppies – Music with Mar.
. – Music with Mar. . – Marla Lewis Know Those 10's – Jennifer Fixman Numbers With a 1. Adding and Subtracting. Thinking Blocks - Modeling Tool Videos - Addition and Subtraction.
Grade 1: Modeling Addition: Developing the Concept. Help with Opening PDF Files Once children have had practice joining groups with sums to 6, you can introduce the Zero Property and the Commutative Property, and writing addition sentences vertically. Finally, introduce sums to 7 and 8 and then focus on different ways to make a number, up to 8. Materials: overhead projector, 8 overhead counters, blank overhead transparency; Workmat 2 (Two-Part Mat in the student book), 8 counters, and Ways to Make (PDF file) worksheets for each child; Race to the Sum (PDF file) game board, spinner (0–3), number cubes (1–5) for every 2 children Preparation: Be prepared to give each child 8 counters and a copy of Workmat 2 during the lesson.
Prepare Ways to Make (PDF file) worksheets for each child. Make copies of Race to the Sum (PDF file) game boards and spinners with the numbers from 0 to 3 for each pair of children. Prerequisite Skills and Concepts: Children should be proficient in counting and recognizing numbers to 10. Unit_4_Addition_and_Subtraction. Addsub_2ed. Addition and Subtraction Teaching Ideas. S2G2.doc. Add_Subtr_BasicFacts_Hdbk.