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K-N-1-4

Page history last edited by Tashe Harris 6 years, 2 months ago

K.N.1.4 Recognize without counting (subitizing) the quantity of a small group of objects in organized and random arrangements up to 10.

In a Nutshell

Subitizing is when a student can look at a group of objects or ten frame and know how many there are without counting. This can be done by seeing patterns and doing mental addition or subtraction automatically. There is no right or wrong path to this, students will see it how it makes sense to them. This concept will be the foundation for formal addition and subtraction, composing and decomposing numbers, as well as understanding what number represent.

Student Actions	Teacher Actions
Develop procedural fluency by assigning a number to a random array of objects. Communicate mathematically by explaining how many they see without counting. ( Ex. Using dot patterns, ten frames, tally marks)	Connect mathematical numerical representations by providing activities that give students the opportunity to practice and talk about subitizing. (Ex. Flash a dot pattern then ask several students how many they saw and how they reached that answer) Encourage and support productive struggle daily by allowing student discussion of the different ways they saw a number represented.
Key Understandings	Misconceptions
Know how many are in a group without counting Know that each number can be represented with objects in a variety of configurations.	Counting objects in the air or seeing them in your head as you count them is subitizing. Groups must be organized the same way every time the number is shown.