Kindergarten Mathematics Addition & Subtraction to 10
Understandings:
Students will begin understanding the action of joining to represent addition and the action of separating as subtraction. With joining, students will add addends (0-9) up to sums of 10 and with separating, students will find differences from 10. Students must understand that joining and separating represent an action. Once students understand these two concepts, they then can make connections between quantities and numbers in problem situations to objects and drawings used and then to concrete models to represent contextual situations.( K.3) A
Students should use their knowledge of numbers to either compose numbers, combining parts or smaller values to form a number, or decompose numbers, breaking a number into parts or smaller values, using objects and pictures. (K.2) I
TEKS:
K.2(I)(R) Compose and decompose numbers up to 10 with objects and pictures.
K.3(A)(S) Model the action of joining to represent addition and the action of separating to represent subtraction.
Learning Targets:
I can join and separate numbers with objects and pictures (to 10) (K.2I)
I can join objects and numbers to add (to 10) (K.3A)
I can separate objects and numbers to subtract (to 10) (K.3A)
Essential Questions:
How can a number be composed and decomposed in different ways?
What are some strategies for accurately counting and keeping track of quantities?
What words can we use to describe joining and breaking apart?
