∑ Math Academy

Cambridge / IGCSE • Counting & Numbers

Counting to 20

Welcome to Grade 1 Math! Counting helps us find out how many objects, toys, or fruits we have.

Learning Objectives

  • Count forward from 1 to 20
  • Recognize number symbols up to 20
  • Match objects to number quantities

Lesson Explanation

Lesson Content

When counting objects, touch each object once and say the numbers in order: 1, 2, 3, 4, 5... up to 20. The last number you count tells you the total amount.

💡 Key Takeaway

Take one step at a time, check your working carefully, and keep both sides balanced!

Worked Examples

Example 1

Count 5 apples: 🍎 🍎 🍎 🍎 🍎

  1. Step 1

    Point to the first apple and say 1

  2. Step 2

    Count: 1, 2, 3, 4, 5

  3. Step 3

    There are 5 apples in total!

Visual Method

Balance Every Step

Mathematics becomes much clearer when you can see the structure behind equations.

Watch Video Explanation

Practice Questions

Try solving each question on paper first. Tap below to check a helpful hint or solution!

Question 1

How many stars are there? ⭐ ⭐ ⭐ ⭐ ⭐ ⭐ ⭐

Show Hint / Solution 💡

Count each star one by one starting from 1.

Question 2

What number comes after 14?

Show Hint / Solution 💡

Say numbers out loud: 12, 13, 14, ...

Lesson Summary

What to Remember

Practice counting objects one by one to find out how many there are in total.

Download Lesson Notes ↓