Lesson Seeds: The lesson seeds are ideas for the domain/standard that can be used to build a lesson. Lesson seeds are not meant to be nor are they substitutes for instruction. Domain: Operations and Algebraic Thinking Cluster: Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from. Standard: K.OA.A.4 For any number from 1 to 9, find the number that makes 10 when added to the given number. Purpose/Big Idea: Building student’s knowledge that the number pairs that total ten are foundational for students’ ability to work fluently within base-ten numbers and operations. Materials: Large Floor Number Line Numbered 0 to 10 – Foam Number Cubes (Dice) Bucket posted with the Numeral 10 Bean Bag Painter’s tape works well for creating the floor number lines easy to apply and remove. – Activity: Variation 1: Group students into groups of five or six. Create stations of number lines around the room. Place the bucket at the end of each number line representing the number 10 on the line. The first student stands on 0 and tosses the beanbag to the number 1. The student hops to the number 1 and picks up the beanbag. The student then tosses the bean bag into the 10 bucket. The student then hops, counting the number of hops to make 10 from the number 1. The student would state the equation (1 + 9 = 10). The next student would start on 0 and toss to the number 2, pick up the beanbag and throw the beanbag into the 10 bucket. The student would hop, counting the number of hops to make 10 from the number 2. The student would state the equation (2 + 8 = 10). This would continue with the remainder of the students and the values up to 9. Variation 2:
Lesson Seeds: The lesson seeds are ideas for the domain/standard that can be used to build a lesson. Lesson seeds are not meant to be nor are they substitutes for instruction. Domain: Operations and Algebraic Thinking Cluster: Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from. Standard: K.OA.A.4 For any number from 1 to 9, find the number that makes 10 when added to the given number. Purpose/Big Idea: Building student’s knowledge that the number pairs that total ten are foundational for students’ ability to work fluently within base-ten numbers and operations. Materials: Large Floor Number Line – Numbered 0 to 10 Foam Number Cubes (Dice) Bucket posted with the Numeral 10 Bean Bag Painter’s tape works well for creating the floor number lines – easy to apply and remove. Activity: Variation 1: Group students into groups of five or six. Create stations of number lines around the room. Place the bucket at the end of each number line representing the number 10 on the line. The first student stands on 0 and tosses the beanbag to the number 1. The student hops to the number 1 and picks up the beanbag. The student then tosses the bean bag into the 10 bucket. The student then hops, counting the number of hops to make 10 from the number 1. The student would state the equation (1 + 9 = 10). The next student would start on 0 and toss to the number 2, pick up the beanbag and throw the beanbag into the 10 bucket. The student would hop, counting the number of hops to make 10 from the number 2. The student would state the equation (2 + 8 = 10). This would continue with the remainder of the students and the values up to 9. Variation 2: