Math is SUBITIZABLE

ABOUT

Research Foundation

moving from counting all to subitizing

This set of cards Strategies …

Dots 1 - 10: This collection shows dots that are in various configurations. Slide #2 shows a year-long progress based on the models from Number Talks by Sherri Parrish, pg. 71 - 81

Five Frames 0 - 5: This collection shows dots that are in various configurations. Adapted from the models from Number Talks by Sherri Parrish, pg. 90. SC

Ten Frames 0 - 10: This collection shows dots that are in various configurations. Slide #2 shows a year-long progress adapted from on the models from Number Talks by Sherri Parrish, pg. 91 - 96. CM

Addition

SC Make 5: This collection visualized combinations of 5 using dots, ten frames and dominoes. This set emphasizes the Commutative Property of Addition.

SC Five Plus More: This collection visualizes and emphasizes 5 plus some more to 10.

SC Doubles w/ Sums from 0 to 20:

  • Dots

  • Ten-Frames

  • Dominoes

SC Doubles Plus 1 w/ Sums to 20:

SC Doubles Plus 2 (Visual Math Morphing):

SC Doubles Minus 1 (Visual Math Morphing):

SC Doubles Extended w/ Benchmark Numbers from 20 to 100:

CK Make Ten:

  • Dots (Visual Math Morphing):

  • Ten Frame:

  • Make Ten Extended: Compliments of 100 using multiples of 10, e.g., 30 + 70.

CK Addition to 20 with Double Ten -Frame:

CK Extended Addition to 100: Supporting decomposing by place value/partial sums.

  • Ten-Frames: Uses doubles in the tens place. Supporting decomposing by place value/partial sums.

  • Ten-Frames: Uses compliments of 10 in the ones place.

  • Base-Ten Blocks: Uses doubles in the tens place. Supporting decomposing by place value/partial sums.

  • Base-Ten Blocks: Uses compliments of 10 in the ones place.

CK Base-Ten Blocks Addition to 1,000:

Multiplication

Subitizing Sets:

  • Equal Groups CK

  • Arrays CK

Distributive Property