Grade-1-Number Sense

Number sense can be thought of as flexible thinking and intuition about number. In order for students to develop deep thinking of many mathematical concepts, flexible and fluent thinking with numbers is essential. A sense of number is much more than being able to reading and write numbers, rotely count, memorize number facts and solve number problems. The curriculum outcome indicators show the richness of the outcome.

Outcomes for Grade 1 Number Sense

Essential Ideas
Basic Counting

• saying number sequence forward by 1s from a given number to 100
• saying the number sequence backward by 1s, from a given number to 0
• demonstrating an understanding of numbers by skip counting by 2s to 20 and by 5s and 10s to 100

Rubrics


Self Assessment Tools


Assessment Tasks

DNA Subitizing Task
DNA Counting Task


Helpful Sites For Students - Counting

Strategic Counting

• Recognizing at a glance (subitizing) and naming familiar arrangements of 1 - 10 objects, dots or pictures
• counting set accurately to 20 following counting principles
• demonstrating an understanding of numbers by using parts or equal groups to count as sets

Whole Numbers

• representing whole numbers to 20, concretely (including ten frames) and pictorially
• representing whole numbers to 20 in a variety of equal groupings, with and without singles

Addition and Subtraction

• creating and solving problems in context that involve addition then recording the process symbolically
• creating and solving problems in context that involve subtraction, then recording the process symbolically