WA.K.1. Core Content: Whole numbers (Numbers, Operations): Students begin to develop basic notions of numbers and use numbers to think about objects and the world around them. They practice counting objects in sets, and they think about how numbers are ordered by showing the numbers on the number line. As they put together and take apart simple numbers, students lay the groundwork for learning how to add and subtract. Understanding numbers is perhaps the most central idea in all of mathematics, and if students build and maintain a strong foundation of number sense and number skills, they will be able to succeed with increasingly sophisticated numerical knowledge and skills from year to year.
K.1.A. Rote count by ones forward from 1 to 100 and backward from any number in the range of 10 to 1.
K.1.C. Fluently compose and decompose numbers to 5.
K.1.D. Order numerals from 1 to 10.
K.1.E. Count objects in a set of up to 20, and count out a specific number of up to 20 objects from a larger set.
K.1.G. Locate numbers from 1 to 31 on the number line.
K.1.H. Describe a number from 1 to 9 using 5 as a benchmark number.
WA.K.2. Core Content: Patterns and operations (Operations, Algebra) Students learn what it means to add and subtract by joining and separating sets of objects. Working with patterns helps them strengthen this understanding of addition and subtraction and moves them toward the important development of algebraic thinking. Students study simple repetitive patterns in preparation for increasingly sophisticated patterns that can be represented with algebraic expressions in later grades.
K.2.A. Copy, extend, describe, and create simple repetitive patterns.
K.2.C. Model addition by joining sets of objects that have 10 or fewer total objects when joined and model subtraction by separating a set of 10 or fewer objects.
WA.K.3. Core Content: Objects and their locations (Geometry/Measurement) Students develop basic ideas related to geometry as they name simple two- and three-dimensional figures and find these shapes around them. They expand their understanding of space and location by describing where people and objects are. Students sort and match shapes as they begin to develop classification skills that serve them well in both mathematics and reading - matching numbers to sets, shapes to names, patterns to rules, letters to sounds, and so on.
K.3.B. Sort shapes using a sorting rule and explain the sorting rule.
K.3.C. Describe the location of one object relative to another object using words such as in, out, over, under, above, below, between, next to, behind, and in front of.