📏 Part 1: Understanding Measurement Units

1. Circle the correct answer: How many centimetres are in 1 metre?

10 centimetres

50 centimetres

100 centimetres

1000 centimetres

2. Which unit would you use to measure these objects? Circle cm or m for each:

a) Length of a pencil: cm or m

b) Height of a door: cm or m

c) Width of your desk: cm or m

d) Length of a paperclip: cm or m

3. Why is it important to use standard units when measuring? Write your answer below:

🤔 Part 2: Estimating Lengths

4. Look at the objects around your classroom. Estimate their lengths in centimetres or metres:

a) Your ruler: Estimate _______ cm

b) Your desk: Estimate _______ cm

c) A book: Estimate _______ cm

d) The classroom door: Estimate _______ m

e) The whiteboard: Estimate _______ m

5. What helps you make a good estimate? Check all that apply:

Comparing to objects I know the size of

Using my ruler as a guide

Thinking about metres and centimetres

Just guessing randomly

📐 Part 3: Measuring with Rulers

6. Now use your ruler to measure the same objects from Part 2. Write the actual measurements:

a) Your ruler: Actual _______ cm

b) Your desk: Actual _______ cm

c) A book: Actual _______ cm

d) The classroom door: Actual _______ m

e) The whiteboard: Actual _______ m

7. Compare your estimates with your actual measurements. Circle how close you were:

Very close (within 2 cm or 0.2 m)

Close enough (within 5 cm or 0.5 m)

Not very close (more than 5 cm or 0.5 m different)

8. Draw a line that is exactly 8 centimetres long using your ruler:

🏠 Part 4: Real-World Connections

9. Match each measuring situation with the best unit to use:

1. Length of a swimming pool

2. Width of a stamp

3. Height of a person

4. Length of an ant

A. Centimetres

B. Metres

C. Metres

D. Centimetres

10. Fill in the blanks with the correct measurements:

When I cook with my family, we might need to measure _______ centimetres of ribbon for decorating a cake. When we go to the park, the playground might be _______ metres long. A new pencil is about _______ centimetres long, and our kitchen table is about _______ metres wide.

11. Describe one time when you might need to measure something at home: