# Why Dot Collections?

#### The hand out below describes the skill of subitizing. Share with colleagues and parents.

Number Sense begins with the ability to automatically identify and describe quantities to 10.

I see 7 things, I know 7 can be expressed as 5 + 2 and 4 + 3 and 6 + 1. They are all connected and I can explain how. They are all equal, they all represent 7 things. I can show you by putting out 7 things and moving them around. You will see it is always 7.

### In Kindergarten and Grade One, students first develop their ability to subitize. They build, sort, compare and combine collections of 2, 3 and eventually 5.

Use dots and recipe cards. Make sets of 2. Describe position and orientation. Build vocabulary. Introduced the equal sign.

My materials are developed around 3 different models and teachers guide students to translate between the 3 models.

Dot Collections, Block Collections & Chunk itZ

### Once students trust and can Find 5 in larger collections, introduce and practice building fluency with the numbers from 6 to 10. The materials are set up as separate books to make it easier to download.

The materials are sequenced to lead students through a progression of number sense components. The work begins with quantity recognition, NOT making equations. Not writing additions and subtractions.

Understanding the additive composition of each number forms the foundation for LIFELONG success with ALL math.

NUMBER IS IN NUMBER and RELATIONSHIPS MATTER.

My early number materials focus around 3 different physical models. Each serves a distinct purpose. The goal is translation. If students truly understand, they can translate the 7 into different representations.

I use something round: dots or bingo chips

I use something 3 dimensional: unifix cubes

I use something connected or Chunked: Chunk itZ