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· August 3, 2026

LLFE-YL02 · One, Two, Three! — Numbers 1–20

A1 · YOUNG LEARNERS · NUMERACY

🔢 One, Two, Three!

⏱ 5 minutes · 📚 CELTA-informed · 🎯 A1 Cambridge level

📖 From the teacher’s desk: At Merivale in Sydney, counting was everything — 16 covers on table 4, 3 bottles of Bollinger for table 12! Numbers in English felt natural to me because I used them hundreds of times a day. Children learn numbers fastest when they count real, tangible things around them.

🎯 By the end of this lesson, you can: count from 1 to 20 in English and use numbers in simple sentences.

🔥 Warm Up (1 min)

Count the 🍎 apples: 🍎🍎🍎🍎🍎🍎🍎

How many? Say the number in English!

📖 Learn It (2 min)

1
one
2
two
3
three
4
four
5
five
6
six
7
seven
8
eight
9
nine
10
ten
11
eleven
12
twelve
13
thirteen
14
fourteen
15
fifteen
16
sixteen
17
seventeen
18
eighteen
19
nineteen
20
twenty

👂 Notice the pattern: 13–19 all end in -teen!

✏️ Try It (2 min)

Write the word for each number:

  1. 7 = _______
  2. 13 = _______
  3. 20 = _______
  4. 11 = _______
  5. 18 = _______

🎵 Chant challenge: Count 1–20 clapping your hands on each number. Can you do it in 15 seconds?

🗝️ Answer Key
  1. seven
  2. thirteen
  3. twenty
  4. eleven
  5. eighteen

Independent project; not affiliated with, endorsed by, or accredited by Cambridge University Press & Assessment. Confers no qualification.

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