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2nd Grade Cardinal Numbers Resources

3 2nd grade cardinal numbers resources: 2 activities, 1 song and 1 video. How teachers use these

2nd Grade Cardinal Numbers Resources

3 2nd grade cardinal numbers resources: 2 activities, 1 song and 1 video. How teachers use these

Activity
Activity2nd GradeNumber Word Lights Activity

Using Number Word Lights Activity, students match the number with the number word in order to build their math fluency.

Activity
Activity2nd GradeOrdering Numbers 0-100 Christmas Activity

This ordering numbers 0-100 Christmas activity has 1st to 2nd Grade students sort 24 holiday number cards and order each set from least to greatest. Answer key included.

From our teachers' playbook

Counting numbers that tell how many

What do 2nd graders learn about cardinal numbers?

Cardinal numbers are the counting numbers that tell how many: 3 apples, 25 kids, 100 days of school. Second graders read and write them up to 1,000 in numerals and in words, like 47 = forty-seven. They put numbers in order, compare them with >, < and =, and learn the difference between cardinal numbers (how many) and ordinal numbers (which position, like first or third). The click moment is when kids spot the pattern in number words, so sixty-two is just "sixty" plus "two."

Our favorite ways to teach cardinal numbers

Counting, ordering and number words all come together here. These are the moves that work best.

Sing the comparisons

Play the greater than, less than song before comparing numbers. Kids act out the alligator mouth with their arms as they sing. When it's time to write the symbol, they already know which way it opens.

Why it works: a catchy, repeating tune gives the brain a hook to hang words on, so sung text is remembered better (Wallace, 1994).

Greater Than Less Than Inequalities SongTry it withGreater Than Less Than Inequalities SongSongsOpen it →

Line it up

Hand out number cards and have kids put themselves in order across the room without talking. Then they read the numbers aloud from smallest to largest. It's a quick, active way to practice ordering.

Why it works: kids understand an idea best when they touch it, then draw it, then write it, the order the U.S. Department of Education recommends for elementary math.

Ordering Numbers 0-100 Christmas ActivityTry it withOrdering Numbers 0-100 Christmas ActivityActivitiesOpen it →

A number word a day

Write one number on the board each morning and have kids write it in words on a sticky note. A couple of minutes daily builds spelling and number sense without a long lesson.

Why it works: spreading practice out over days is one of the two most effective study methods in a major research review (Dunlosky and colleagues, 2013).

Number Word Lights ActivityTry it withNumber Word Lights ActivityActivitiesOpen it →

Questions parents and teachers ask about cardinal numbers

What is a cardinal number?

A cardinal number tells how many of something there are, like 5 pencils or 12 eggs. They are the numbers we use for counting.

What is the difference between cardinal and ordinal numbers?

Cardinal numbers tell how many (one, two, three). Ordinal numbers tell position or order (first, second, third).

How do I teach number words to 2nd graders?

Start with the words for 1 to 20 and the tens (twenty, thirty, forty). Then show how they combine with a hyphen, like thirty-six.

How can I practice cardinal numbers at home?

Count real things together: steps, coins, snacks. Then write the number in numerals and in words, and compare it to yesterday's count.