Counting to 10 and 20 Study Notes

Welcome to your study notes on counting! In Kindergarten, we learn to count numbers from 1 to 10 and then extend our counting skills all the way to 20. Counting helps us understand how many objects there are and is a super important math skill.

Counting to 10 🔢

Counting to 10 is the first big step in learning numbers. We use our fingers, toes, and many everyday objects to practice!

What is Counting? 🤔

Counting means saying numbers in order, like "one, two, three," and matching each number to one object. When you count, you find out how many things you have.

How to Count to 10 🖐️

Let's practice counting from 1 to 10. Say each number as you point to an object!

• 1 (One) ☝️
• 2 (Two) ✌️
• 3 (Three) 🤟
• 4 (Four) 🖖
• 5 (Five) 🖐️
• 6 (Six)
• 7 (Seven)
• 8 (Eight)
• 9 (Nine)
• 10 (Ten) 🔟

Matching Numbers to Quantities 🍎

It's important to know that each number means a certain amount of things.

📌 Key Takeaway: The last number you say when counting a group of objects tells you the total number of objects.

Look at these examples:

• If you have \( \text{one apple} \), you count "1".
• If you have \( \text{two apples} \), you count "1, 2".
• If you have \( \text{five apples} \), you count "1, 2, 3, 4, 5".

Writing Numbers 1-10 ✍️

We recognize and write numerals that stand for these quantities.

Numeral	Count	Example Objects
\( 1 \)	One	⭐️
\( 2 \)	Two	⭐️⭐️
\( 3 \)	Three	⭐️⭐️⭐️
\( 4 \)	Four	⭐️⭐️⭐️⭐️
\( 5 \)	Five	⭐️⭐️⭐️⭐️⭐️
\( 6 \)	Six	⭐️⭐️⭐️⭐️⭐️⭐️
\( 7 \)	Seven	⭐️⭐️⭐️⭐️⭐️⭐️⭐️
\( 8 \)	Eight	⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️
\( 9 \)	Nine	⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️
\( 10 \)	Ten	⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️

Counting Forward and Backward (to 10) 🚀

We can count forward, starting from any number, and also count backward.

• Counting Forward: Start at \( 3 \). Count \( 3, 4, 5, 6 \).
• Counting Backward: Start at \( 5 \). Count \( 5, 4, 3, 2, 1 \).

Counting to 20 ➕

Once you master counting to 10, counting to 20 is just adding more numbers in order!

Building on Counting to 10 🧱

The numbers from 11 to 20 continue the pattern. We often see them as "ten and some more." For example, eleven is "ten and one."

How to Count to 20 🔟➕🔟

Let's keep counting from where we left off at 10:

• 11 (Eleven)
• 12 (Twelve)
• 13 (Thirteen)
• 14 (Fourteen)
• 15 (Fifteen)
• 16 (Sixteen)
• 17 (Seventeen)
• 18 (Eighteen)
• 19 (Nineteen)
• 20 (Twenty) 🎉

Matching Numbers to Quantities (up to 20) 🎈

Just like with numbers to 10, each number up to 20 represents a specific quantity of objects.

• If you have \( \text{eleven balloons} \), you count "1, 2, 3, ..., 11".
• If you have \( \text{twenty blocks} \), you count "1, 2, 3, ..., 20".

Writing Numbers 11-20 ✏️

Recognizing and writing these numerals is important.

Numeral	Count	Example Objects
\( 11 \)	Eleven	🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎
\( 12 \)	Twelve	🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎
\( 13 \)	Thirteen	🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎
\( 14 \)	Fourteen	🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎
\( 15 \)	Fifteen	🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎
\( 16 \)	Sixteen	🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎
\( 17 \)	Seventeen	🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎
\( 18 \)	Eighteen	🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎
\( 19 \)	Nineteen	🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎
\( 20 \)	Twenty	🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎

Counting Forward and Backward (to 20) 🔄

We can also count forward and backward with numbers up to 20.

• Counting Forward: Start at \( 12 \). Count \( 12, 13, 14, 15 \).
• Counting Backward: Start at \( 18 \). Count \( 18, 17, 16, 15 \).

Key Concepts & Practice Tips 💡

• One-to-One Correspondence: Give one number to each object you count.
• Cardinality: The last number you say is the total number of objects.
• Subitizing: Practice recognizing small groups of objects (like 1, 2, or 3) without counting them one by one.
• Number Order: Always say numbers in the correct sequence.

💡 Pro Tip: Use everyday items like toys, snacks, or even steps while walking to practice counting. Make it a game!