First and second grade students are adding on to the foundation of Number Sense they've built in prior grades. To have "Number Sense" in the primary grades, students should be able to:
- Grade 1
- Easily identify any number to 120
- Know the number before or after any number to 120
- Skip count by 2's, 5's, and 10's from any number to 120
- Know what number is 10, 20, or 30 more or less
- Count on or back from any number (kids will often struggle crossing a decade, ex. 77, 78, 79, ????)
- Decompose/break apart any number 1-20 in multiple ways
- Instantly know "how many more" to make 5, 10 or 20
- Have 5'ness and 10'ness
- Subitize (instantly recognize) number patterns (If they rolled dice, they could instantly recognize the number pattern)
Easy things you can do at home:
- Grade 2
- Easily identify any number to 1000
- Know the number before or after any number to 1000
- Skip count by 2's, 5's, and 10's from any number to 1000
- Know what number is 10, 20, or 30 more or less/100, 200, or 300 more or less
- Count on or back from any number (kids will often struggle crossing a decade, ex. 77, 78, 79, ???? or crossing a century, ex. 198, 199, ?????)
- Decompose/break apart any number 1-1000 in multiple ways
- Instantly know "how many more" to make 5, 10 or 20
- Subitize (instantly recognize) number patterns (If they rolled dice, they could instantly recognize the number pattern)
Easy things you can do at home:
Helpful Websites:
https://nrich.maths.org/2477
Understanding 10
Removal Activity- Help students understand subtraction and counting back
Tens Frame Flash- Pictures of 10's and 1's shown quickly, student identifies number
Curious George Make Ten