Students will develop an awareness of subtraction concepts by observing and illustrating the reduction of sets using various concrete objects. Students will identify the minus sign, what it means, and how to use it in subtraction.
Students will demonstrate an understanding of subtraction as taking away from an object from the giving numbers 1-10.
Common Core Standard:
Operations & Algebraic Thinking K.OA
Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from.
1. Represent addition and subtraction with objects, fingers, mental images, drawings, sounds (e.g., claps), acting out situations, verbal explanations, expressions, or equations.
2. Solve addition and subtraction …show more content…
The teacher will explain to the students that we will place the four buttons on Pete’s shirt and then follow what happens in the story. Explain to the students they need to listen carefully to understand what happens to Pete’s buttons. Then while reading the book, the teacher will ask the students to subtract (minus, take away) 1 button from the shirt. Then the class together will figure out how many buttons are left before going to the next page.
The teacher will start to read the book. On the first page have the students count the buttons on his shirt. Then have the students match their buttons on their Pete the cat shirt. The teacher will write the number 4 on the whiteboard. During the book, Pete’s buttons start to pop off. Every time a button pops tell the student to subtract (minus, take away) a button. The teacher will ask the students to put away the button. Count how many buttons are left? Have the students said out loud how many buttons are left? Do this till there are no more buttons left on Pete’s Shirt. Each time a button pops off the teacher will write on the whiteboard the equation (4-1=3) and draw button pictures to show the equation (draw four buttons and cross out