Measure using a centimeter ruler

Hello Kids! 🎉

Today, we’re going to learn how to measure things using a special tool called a centimeter ruler. It’s easy and fun! Let’s get started.

What is a Centimeter Ruler? 📏

  • Centimeter Ruler: A ruler marked with small and big lines Each big line represents one centimeter (cm).
  • Why We Use It: It helps us measure things accurately in centimeters, which is a standard unit of measurement.

How to Use a Centimeter Ruler:

  1. Find the Zero: Start by finding the “0” mark on the ruler. This is where you’ll begin measuring.
  2. Line It Up: Place the “0” mark at one end of the object you want to measure.
  3. Read the Measurement: Look at the other end of the object and see which number it lines up with on the ruler. This number is the length of the object in centimeters.

Examples:

  • Measuring a Pencil: Place the “0” at one end of the pencil. If the other end is at “13,” the pencil is 13 centimeters long.
  • Measuring a Mobile Phone: Place the “0” at one end of the book. If the other end is at “8,” the book is 8 centimeters tall.

Tips for Accurate Measuring:

  • Start at Zero: Always start measuring from the “0” mark to get the correct length.
  • Lay It Flat: Make sure the ruler is flat and straight along the object.
  • Check Twice: Look carefully at the number to make sure you read it correctly.

Why Measuring with a Ruler is Important:

  • Accuracy: Using a ruler helps you measure things accurately.
  • Consistency: Everyone can measure things the same way, so we all understand the measurements.
  • Practice for Big Kids: Learning to use a ruler now prepares you for more advanced measurements later.

Learn with an example

💎 Move the ruler to measure the length of the line to the nearest centimeter.


💎 The line is about _____centimetres long.

  • Line up the left end of the line with the 0 mark on the ruler.
  • The right end of the line is at the 3-centimeter mark. The line is about 3 centimeters long.

💎 Move the ruler to measure the length of the line to the nearest centimeter

💎 The line is about _____ centimeters long.

  • Line up the left end of the line with the 0 mark on the ruler.
  • The right end of the line is at the 9-centimetre mark. The line is about 9 centimeters long.

💎 Move the ruler to measure the length of the line to the nearest centimeter.

💎 The line is about _____ centimetres long.

  • Line up the left end of the line with the 0 mark on the ruler.
  • The right end of the line is at the 4-centimetre mark. The line is about 4 centimeters long.

Let’s practice!🖊️