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## Subitizing: Moving from Perceptual to Conceptual

Subitizing–funny sounding word, but a very important skill for developing number sense. Basically, we subitize when we instantly recognize a small group of objects as a number. For example, if I hold up five fingers and you instantly know it’s five without...

## Exploring Equality and Composing Numbers

I’ve been working with my Firsties on the following TEK: 1.2(A) recognize instantly the quantity of structured arrangements Although it is not mentioned in the TEK, the mathematical word for this skill is subitizing. The dot patterns on dice and dominoes are...

## Flexibility with Place Value

New standards call for an increased emphasis on understanding place value, rather than just, for example, identifying the digit in a certain place value position (eg., In the number 345, what digit is in the hundreds place?).  In Texas, both the 1st and 2nd grade TEKS...

## The Hiding Assessment in Action

Fluency and flexibility with numbers are the hallmarks of mathematical thinking. For our students to excel in mathematics, they must understand how numbers can be composed and decomposed. That’s why learning the combinations for numbers to 10 should be the...

## Ten Frame Mania–FREE App

Put two of my favorite things together–Greg Tang and a ten frame–and I’m a happy camper! I am in awe of Greg and the amazing resources he provide teachers for free on his website. If you have not tried his Word Problem Generator, you are truly...

## Counting to the 100th Day

It’s the beginning of the new school year, so what better time to think about the time-honored tradition of counting to the 100th Day of School? Many teachers have routines for counting the days to the 100th day, but I want to propose using ten-frames.  You can...