Subitizing Instant Recognition of Numbers
T.I.P.S.
The student must be able to instantly “see how many,” rather than having to count the number of objects in a small group. They must be able to form mental pictures of numbers, such as the pips on dice or dominoes. They must be able to use manipulatives that support the understanding of the quantity of ten, such as 10-frames or rekenreks, and other structured arrangements of quantities common in everyday life, such as egg cartons, crayon boxes, 6-packs, and fingers.
Example
Look at the cubbies shown below.
How many lunch bags are in the classroom cubbies? Explain how you knew the number of lunch bags without counting. Hint Possible Solutions
Digital Tools
Click on the following links for interactive games.
Number Rack
Ten Frames
Concentration
Counting Challenge
Fishy Count
Resources
Click on the following links for more information.
Developing Early Number Sense
Dot Cards and Ten Frames
TEKS
1.2 Number and operations. The student applies mathematical process standards to represent and compare whole numbers, the relative position and magnitude of whole numbers, and relationships within the numeration system related to place value. The student is expected to:
(A) recognize instantly the quantity of structured arrangements
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