Counting to Ten

We begin where every mathematician begins: by saying the numbers in order, one at a time.

What we're learning

By the end of this lesson, your child will be able to:

• Say the count words from 1 to 10 in order, without skipping
• Touch one object as they say each number (this is called one-to-one correspondence)
• Tell you "how many" after counting a small group

This is the most foundational skill in all of mathematics. Every later idea — adding, subtracting, place value, fractions, even algebra — sits on top of this.

Try it together

Find ten small objects you can move around. Cheerios, blocks, pebbles, buttons — anything that won't roll away too fast.

1. Put them in a row.
2. Touch the first one and say "one."
3. Touch the next one and say "two."
4. Keep going.

If they skip a number or count the same object twice, that's normal. Slow down and try again. The point isn't to be fast — it's to make sure the count word and the object line up.

The "how many" question

After counting, ask: "So how many are there?"

This is harder than it sounds! A child who has just counted "1, 2, 3, 4, 5" out loud might not yet know that the answer is 5. The last number you say is the total. Mathematicians call this the cardinal principle.

If your child doesn't get this yet, don't worry — it usually clicks within a few weeks of practice.

Common patterns we see

• Skipping the teen-numbers: "...nine, ten, twenty." This is incredibly common. Just gently restart at "...nine, ten, eleven."
• Memorizing without correspondence: Saying the words quickly while touching objects randomly. Slow down and exaggerate the touch on each number.
• Confusing "how many" with the last object: Pointing to the last cheerio when asked "how many?" instead of saying "five." Practice saying both: "Five! Five cheerios!"

When to move on

When your child can:

• Reliably count a row of 10 objects, touching each one
• Answer "how many?" with the last number they said
• Count out 5 things from a pile of 10 when you ask

…they're ready for the next lesson, where we start comparing groups.